Plot:D-Children: Light & Dark

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This is a complete summary of the story of D-Children: Light & Dark. Since Episodes 9 through 20 are currently considered lost media, they will not be listed in this summary.

Episode 1: Valhalla

Jin, Akira, and Rena happen upon an occult book in their school's library while cleaning it out, which tells of a Demon world of called Valhalla. Chanting an incantation in the book, time in the kids' world suddenly freezes, and they are transported to Valhalla's Time Tower by Ami Kashihara, who claims that it was left barren by the Imperial Army. Ami tells Jin and Akira that they are the reincarnations of Valhalla's creators, the Son of Light and Prince of Darkness–the Devil Children. During a sudden fight against Gargoyles, the boys obtain Devilisers that allow them to summon their partners Rand and Gale. As for Rena, she is given a Vinecom that contains info on Demons. After sealing away the Gargoyles, the group set off to find a way to save Valhalla and unfreeze time in their world.

Episode 2: Time Chain

Jin and Akira are provided a Time Key and Time Chain by Ami, items which when activated can control the time flow of Valhalla. Ami believes that by awakening to their powers, the boys can command the Time Chain, and rewrite history to bring Valhalla back to an era of peace. A horde of Behemoths attack the group and kidnap Ami, after which she learns Emperor Azrael seeks to use the Time Chain to bend time to his will. Jin and Akira find Ami and fight the Behemoths; although Rena is reluctant to join, instead wanting to return to the human world, she helps by scanning the Demons' weak points with her Vinecom. Unfortunately, a Behemoth's misfire hits Ami's Time Key, causing the Time Chain to scatter across the world. As the group embark on their journey to find the chain pieces, Emperor Azrael, from his throne, eagerly wonders how they intend to rewrite history.

Episode 3: Barbatos Fortress

While on the hunt for a nearby Time Chain piece, the kids happen upon a fortress belonging to the Imperial Army, which was built over a village of humans enslaved by many Barbatos. Jin and Rand try fighting the Barbatos, but get captured and locked inside the fortress. Akira leads the others through a tunnel to the fortress, to which they are ambushed, so Gale sacrifices himself to ensure the others escape. Sustaining minor injuries, Akira proclaims it is his turn to protect Gale. Meanwhile, Jin, Rand, and Gale manage to sneak out of prison and take Jin's Deviliser back from the Barbatos's boss, but nearly fall from the fortress roof. Luckily, Akira soars in on a paraglider, and he and Jin power up their partners to seal the Barbatos.

Episode 4: Harborim's Conspiracy

As the team proceed to a village where a Time Chain piece is supposedly located, a Demon of the Imperial Army named Harborim commences a pursuit against them. Meanwhile, Rena bickers with Jin about being dragged into this journey, and that unlike him and Akira, she is not a Devil Child. Finding a phony Time Chain along the way, the team are lead to a chain market, but their search is for naught. Returning to the market the next day, Harborim holds Rena hostage, revealing the market to have been a set-up. Jin and Akira manage to seal Harborim and claim his ring, which turns out to be a piece of the Time Chain.

Episode 5: Pierce the Seas!

When a Time Chain piece is detected across the sea, the team arrive at a port town, where a man named Zabel explains he is digging an undersea tunnel. However, the volcanic terrain makes the tunnels hard to cross. A squadron of Balors then sail in, to which the team plan on sneaking aboard their ship in order to reach the neighboring continent. Jin and Rand's covers are blown, resulting in their persecution by the Balors. Retreating to the undersea tunnel, they encounter Zabel and his partner Issitoq, offering to help him drill to the other continent. Zabel is content on drilling, despite being under volcanic terrain; his ill daughter died after the Balors denied them access to a ship, as the closest hospital was overseas. Regaining his confidence from Jin, Zabel and Issitoq resume drilling and emerge on the other continent, reuniting with Akira and the others. The Balors get sealed, to the villagers' delight, and Issitoq parts ways with Zabel.

Episode 6: The Healing Devil

While struck with hunger, the group proceed to a pillar of smoke in the forest. Along the way, they find Issitoq basking in a green light conjured by a dragon. Jin takes the dragon for a foe and punches it, revealing it to be a costume piloted by Leprechauns, who quickly disband. Arriving at the village, Old Geppetto informs the group that the Leprechauns' light protected it from the Imperial Army. Feeling guilty for scaring them away earlier, Jin sets out to find the Leprechauns. Rena follows and falls into an sinkhole, while the Demon Anzu attacks the unprotected village. As Akira, Gale, and the villagers fight Anzu, the Leprechauns find Rena in the pit; Issitoq retrieves her Vinecom and goes searching with Jin and Rand. Before Rena succumbs to hypothermia, recalling a childhood memory wherein Jin saved her from drowning in a river, Jin and the Leprechauns hoist her up with a pulley mechanism. The kids seal away Anzu, after which the Leprechauns envelop the village in light and vanish, confident the people will be safe from the Imperial Army.

Episode 7: First-Time Partner Demon

The kids arrive at a dried-up lake encompassing a treetop village, whose inhabitants rely on Isssitoq's ice to stave off the heat. A feud then breaks out between the village chief and his son, the latter leaving the village alongside his siblings and Issitoq. As for the group, they learn the Imperial Army built a floodgate that cuts off the village's water, which is managed by Garm. The team successfully fight and seal away Garm with the help of the chief's son and Issitoq, bringing water back to the treetop village.

Episode 8: The Flame Guardian God

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Episode 21: The Hermit Illustionist

The group battle Daidarabotchi after he ravages an old couples' house. Following their victory, Jin rudely disregards Rena's contributions to the team, making her upset. While visiting a carnival in Hermit Village, Rena runs off and meets Mad Hatter, a stage-frightened Demon. Rena attends Mad Hatter's magic show, but after it goes horribly, she visits him and watches him practice, reminding her of when she practiced baseball with her little brother. Later on, Rena's frustration causes her to snap at Mad Hatter, to which he runs away, much like how Rena's brother did. During her search, she is captured by Daidarabotchi, until Mad Hatter comes to her rescue and makes amends. They work together to scare Daidarabotchi off for good, and the next day, Mad Hatter successfully performs his magic show.

Episode 22: Athena Came from the Past

During a thunderstorm, Jin and Rand take shelter under the Chorus Tree, but are blinded by a lightning strike. A girl named Athena emerges from the light and seems familiar with the land, but does not recall the Chorus Tree having ever been grown. She possesses the last Chorus Tree seed and ancient currency, to which Ogma deduces that Athena came from 300 years in the past. After Ami and Skuld agree to find a way to send Athena back in time, she talks with Jin in a field, reflecting on how desolate the land was in her time. Athena and her father had tried growing Chorus Trees to nurture the land, though all of their attempts failed, and her father eventually died. She explores the field with Jin, who gifts her a four-leaf clover. Meanwhile, Ogma sees the Chorus Tree wither due to a time paradox. Athena refuses to return to her barren home, so Ogma abducts her at night and brings her to a time portal out of fear that history itself is in danger. Jin supports Athena's decision, but as the land and Hermit Village slowly wither away, she chooses to enter the portal while carrying Jin's clover. In doing so, the land flourishes again, and Jin finds a clover engraved on the Chorus Tree.

Episode 23: He Who Knows the Legend

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Episode 24: Puzzle Castle

Shuten Doji terrorizes a hamlet, until a heroic man hits him with a beam of light that saps his power, relocating it to an castle sealed with puzzles. In Hermit, the team struggle to figure out a cubic puzzle, when Ami shows her intellect by solving it. Shuten Doji overhears this, and uses his weakened form to trick Ami into sheltering him. While everyone is asleep, Shuten Doji steals a jar of chocolate from Jin, painting Nemea as the culprit by smearing some on her face. Nemea leaves the group now that Shuten Doji has Ami around his finger. While searching for Nemea, Shuten Doji tricks Ami into searching the castle, to which Nemea alerts the Devil Children. They learn more from Iwasaurus, who notes that the castle will crumble if Ami fails any of the puzzle traps. Jin barges in, triggering a trap that drops them into the castle's depths. Meanwhile, Shuten Doji finds the chamber containing his stolen power and absorbs it. Nemea catches up to Ami and bites the Demon's nose. The three are blasted out of the castles, then the Devil Children show up to seal away Shuten Doji. Ami apologizes to Nemea for her mistreatment, then Iwasaurus arrives, revealing that he was the man who took Shuten Doji's power and created the puzzle castle.

Episode 25: Clotho's Last Lesson

The kids are brought to Clotho, a cheerful woman who teaches the local children how to knit, in hopes of finding another Time Chain piece. However, as Rena pulls up Clotho's data on the Vinecom, it depicts her with a different form. As Jin plays with the Clotho's students, a couple of them run up to a cliff that begins to collapse. Luckily, Rand and Gale rush in to save them. Rena notices Clotho channel power from a gem on her chest, but before she can question it, Jin realizes some students are missing. Everyone goes searching for them, allowing Rena to show the boys Clotho's true form. Elsewhere, Clotho runs into Tamonten of the Imperial Army, who addresses her as a defected commander. Clotho explains her past to the team afterwards, having once worked under Azrael as a powerful swordswoman. Tamonten returns with more soldiers and attacks the group, causing a landslide. Coming to terms with her past, Clotho unleashes her powers to shield everyone and strike Tamonten's allies, giving Jin and Akira a chance to seal them. Clotho chooses to abandon her students now that they know her secret, but to her surprise, they present her with the scarves she taught them to knit. She decides to stay with the children and walks with them to the village, while the team resume their journey.

Episode 26: Bandit VS Goddess!?

Having difficulty locating the next Time Chain piece, the group run into Rangda and are directed to a village close by. Rena is suspicious of Rangda, but the Demon plays innocent. Suddenly, they are swarmed by a school of Skyfish, so Akira orders Gale and Skuld to fight them. At the village, they visit a man holding a glowing tanuki statue, which Rangda believed was a chain piece. Rena and Skuld chastise Rangda for her mistake, making her cry. Overcome with a headache, Jin's head sprouts a flower because he ate a strange fruit earlier, which begins to sap his energy. Ami and Rena stay with him while the others search for a cure, running into the Skyfish along the way. Rangda and Skuld put their differences aside to defeat the enemy Demons, successfully finding an antidote to feed Jin. Just as Jin is rid of the flower on his head, a Gargoyle flies in and captures Ami.

Episode 27: The Floating Fortress

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Episode 28: Decisive Battle! Emperor Azrael

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Episode 29: A New Journey

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Episode 30: Thor's Friendship

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Episode 31: Ares Jr.'s Reunion

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Episode 32: Master Rangda, the Great Bandit!

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Episode 33: Face-off! Jin VS Akira

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Episode 34: To the Mission Underground!

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Episode 35: Devil Fusion!

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Episode 36: Crosel's Castle

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Episode 37: Here's a Perfectly Good Idea

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Episode 38: Summer! Beach! Water Warfare

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Episode 40: Naomi's Serenade

The team run into Shun and Judy in the mountains, catching them in the midst of battle against Verchiels of the Imperial Army. Jin and Rand join the battle and chase the Verchiels away. Afterwards, Akira raises concern over the army's occupation of the mountain, as a piece of the Time Chain is nearby, though Shun is confident that the Verchiels will return with reinforcements. In a fortress within the mountains, a Verchiel reports to Naomi of the team's antics, to which she expresses excitement over Shun's arrival. Akira summons Thor to create a diversion at night, though before the team can reach the fortress, they are surrounded by Verchiels and Naomi shows up, revealing her former association with Shun. She calls for an attack, resulting in Shun's arm getting injured. Following the assault, Raphael arrives and hides everyone in a camouflage tent. Shun and Judy explain how Naomi used to be a rebel spy, but after Hydra Town was destroyed, she was taken by the Imperial Army and employed for her skills. Thinking back to when Naomi played serenades for him, Shun recalls giving her ear piercings, and vowing to restore peace in Valhalla. When Raphael's tent is discovered, Naomi confesses her fears of being the Imperial Army's prisoner to Shun, declaring herself a foe of the rebels. Naomi panics upon hearing Shun whistle her serenade, then Ose appears and smites her with lightning. Jin and Akira engage in battle and emerge victorious, after which Shun finds two Time Chain pieces in Naomi's ear piercings. The team part ways with Shun and Judy once more, while Naomi's serenade chimes in the ruined fortress.

Episode 41: Egg Panic?

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Episode 42: Raphael's Resolution

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Episode 43: The Lone Legionnaire! Ose

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Episode 44: Desert Ride with C (Card)!

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Episode 45: Arise! Earth Element

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Episode 46: A Light and Dark Trap

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Episode 47: Hydra's Swamp

At the Emperor's palace, a Gargoyle reports to Kudlak that a big Time Chain link fell into Hydra's Swamp. Meanwhile in a tavern, a gang of Demons find a posting left by Kudlak, which promises a great reward for whoever finds the link. Raphael eavesdrops on the gang's plans to join the Imperial Army, but get interrupted by Rangda, who everyone recognizes as a friend of the Devil Children. Raphael expresses his gratitude towards Jin and Akira for saving him from the Imperial Army's control, and so joins Rangda in searching for the Time Chain link. They board a raft with the Devil Children team, but some Demons from the tavern, Dahaka and Vodyanik, try intercepting them. The team gets separated in the attack, leaving Rangda stranded with Raphael. However, Rangda struggles against Raphael's awkwardness and optimism, exclaiming she wants the Time Chain link's bounty all for herself to survive in Valhalla. Elsewhere, Jin and Akira fight Xiezhai while Rena and Ami run from Haurvatat, but recklessly manage to reunite. Rangda is followed by Dahaka and Vodyanik into the marsh, though Raphael steps in to protect her. The team arrive just as Hydra emerges and spot the Time Chain caught in its teeth, to which Raphael shoots it down with a makeshift rocket launcher. He surgically extracts the chain from Hydra's mouth to make it calm again, though after it leaves, Dahaka and his gang chase Rangda, with Raphael carrying her away in his arms. The Devil Children celebrate now that the Time Chain is complete, only for Kudlak to quickly snatch it and fly off.

Episode 48: To the Castle of Remiel, the Calamity King!

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Episode 49: Activate! The Time Tower

Unable to take the Time Chain and Key back from Remiel, Jin, Rand, and Ami escape with the help of Akira and Rena aboard Wind Element. The team look over the land to see towns engulfed in flames, with war raging between the Liberation and Imperial Armies. Remiel struggles to hone the Time Chain and Key's power, but unbeknownst to him, the Time Tower rises from the desert and flies to his fortress. Once the team reach Remiel, they watch as the Time Tower descends upon the fortress, encapsulating everyone in a sphere of light. Past a stone mural depicting the Son of Light and Prince of Darkness, they fail to stop Remiel from inserting the Time Chain and Key into the tower. Before Remiel can destroy them, however, Jin and Akira awaken to their truest power, allowing Rand and Gale to ascend to even stronger forms, commencing the ultimate battle against Remiel.

Episode 50: Son of Light, Prince of Darkness

The Devil Children finally seal away Remiel, after which Ami, Jin, and Akira pray to the Time Tower through the Time Chain and Key. As a new history unravels, the souls of fallen Demons are resurrected, and nature blooms throughout the wasteland. Their mission fulfilled, the Devil Children and Rena bid farewell to their companions and enter a stream of energy, awaking in their school's library where time has begun to move again. The kids resume their normal lives, but while the library is empty, the book of Demons opens up and the words mysteriously fade. An angelic being hijacks electronic devices around the world, exclaiming that mankind is at risk of Armageddon. Jin sees a light strike Tokyo Tower later that night, arriving at the scene with Akira and Rena. Demonic tendrils emerge from the tower, grabbing the Devil Children and bystanders, apart from Rena. The tendrils are suddenly eradicated in a golden light, manifesting as the Angel Enoch, who once again exclaims that mankind is in danger.

Episode 51: Angel Enoch

Enoch invites the people of Tokyo to join him in creating a brighter future, then fades away. Adults and children alike start to depend on Enoch for protection, with strong believers able to channel his blessing on their cell phones. Suspicious of Enoch's motives, the trio look through the book of Demons to find its pages of a peaceful future completely blank. The land tremors as Enoch erects the Angel Tower in the middle of the city, proclaiming it serves to protect humanity from an impending demonic force. He emits a light that brands an insignia on everyone's foreheads, though Jin and Akira shield themselves from it, watching as the masses mindless pray to Enoch. Jin confronts his mother, who received the angel's blessing over email, arguing that Enoch may not truly be a savior. Realizing that Enoch has people under his control, Jin meets up with Akira and Rena, failing to convince everyone that the angel should not have dominion over their world. Just then, Enoch appears before the trio and urges them to join his conquering of mankind. They refuse, to which Enoch ensnares them with the same tendrils that shrouded Tokyo Tower, preparing to annihilate them. Rena's laptop then turns into the Vinecom, summoning Nemea, Ami, Rand, and Gale from Valhalla. Jin and Akira regain their Devilisers and charge against Enoch, though he withstands their attacks and takes Rena.

Episode 52: Never Run Away! Never Give Up! Never Back Down!

Enoch departs for the Angel Tower with Rena in his grasp. Afterwards, Ami and the Demons explain that Enoch has also been trying to manipulate the people of Valhalla. Ami states that Enoch is not just after the human world and Valhalla, but is possibly gathering their power to conquer a third world. As for Rena, she has a series of nightmares before waking in the Angel Tower. Enoch omnipotently tells her that, unlike Jin and Akira, she is a mere human, and thus received his blessing over email, too. While Ami, Rand, and Gale fight the tendrils, Jin and Akira climb their way up to an opening in the Angel Tower. Inside, Rena shows up under Enoch's control, but Jin's words almost bring her back to her senses. Enoch intervenes and tries to destroy the Devil Children, until the spirits of the Son of Light and Prince of Darkness emerge. Rena regains control of herself and the tendrils vanish, upon which Ami and the Demons arrive. Rand and Gale strike Enoch with their abilities, with the angel exclaiming that the battle has only just begun. The Angel Tower fades into the sky, and without Enoch, the masses are no longer brainwashed. As life seems normal again, the trio part ways with Ami and the Demons once more. However, Rena receives a phone call the next day, and news broadcasts are heard reporting the appearance of several angels. She walks with Jin and Akira, raising her head to reveal Enoch's insignia, while Enoch himself flickers onto her cell phone.