Watch "Kamen Rider Decade" on Netflix Japan

Tsukasa Kadoya turns into Decade to rescue Natsumi Hikari from monsters. A mysterious youth tells him he must travel the Nine Worlds to save his own.

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Tsukasa, in the World of Kuuga disguised as a policeman, challenges the Gurongi to battle. But he is attacked by Kuuga, who calls him the “Devil”.

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"The Ultimate Darkness," N-Gamio-Zeda, is revived as the World of Kuuga is being destroyed. Decade must fight the Gurongi alone in an uphill battle.

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In the World of Kiva, where Tsukasa meets a young Wataru, Fangires and humans get along, but a misunderstanding leads to battle.

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The Beetle Fangire steals the Kiva armor from Wataru and becomes king, declaring all humans are to be eaten. Yusuke tries to undo the damage.

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Natsumi is arrested for murder in the World of Ryuki and tried in Kamen Rider court, where Riders battle and the winning Rider will decide her fate.

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Shinji suspects the real murderer is Ren, but Yusuke feels otherwise. Meanwhile, Ren fights a single-handed battle in the Mirror World.

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The Riders fight the Undead in the World of Blade as BOARD employees. Kazuma/Blade is their ace fighter, but his attitude gets him in trouble.

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Kamen Rider Chalice suddenly appears and steals the Blay Buckle from Kazuma, who is then fired. Luckily, Tsukasa has a job for him.

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Tsukasa visits the World of Faiz as a high school student. Photo club member Takumi transforms into Faiz to protect his friend from the Orphnoch.

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Lucky Clover, a group of elite Orphnoch members, begins attacking students. Takumi abandons the Faiz Gear to fight in his true form.

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Yusuke goes to the World of Agito where he sees a woman who looks exactly like the late Ai Yashiro. He asks to be the new user of the G3-X suit.

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After Shouichi transforms into Exceed Gills, a new enemy, the Unknown, attacks. Tsukasa fights desperately to protect Shouichi.

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In the World of Den-O, the Imagin take over Natsumi’s body and attack Tsukasa, believing that Decade is behind their loss of physical form.

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After finding out how the Imagin changed the Den-O world by warping through time, Tsukasa teams up with Momotaros to go after the Imagin boss.

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Kabuto saves a young girl from a Worm attack. ZECT plans to capture Kabuto after his malfunctioning Clock Up ability is deemed a menace.

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While it looks like TheBee’s user is Mayu’s brother, Tsukasa isn’t convinced. Meanwhile, Sou begins to carry out the plan to capture Kabuto.

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Tsukasa arrives in the World of Hibiki. But Kamen Rider Hibiki refuses to fight, even against Makamou, forcing the others to fight without him.

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The Riders take on Hibiki after he transforms into the legendary demon Gyuki. Hibiki has a final request for Asumu: become a demon and defeat him.

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Natsumi is overjoyed to return to their original world, but Tsukasa feels something is off. A man tells Tsukasa he’s earned a world of his own.

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Tsukasa learns he is in the World of Negatives, controlled by the Dark Riders. Otoya tells him to stay, but Tsukasa decides to continue his journey.

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Daiki Kaito finds himself a wanted man in the World of Diend. Tsukasa meets Daiki’s brother Junichi, who says Daiki is trying to destroy their world.

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Daiki struggles with the truth of what he did to his brother in the past. Vowing to redeem himself, he sets out to save his brother.

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Tsukasa arrives in the World of Shinkenger and is attacked by a group of Nanashi. Before Tsukasa can transform, the Shinkengers are on the scene.

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After stealing Daiki’s Diendriver, Chinomanako becomes the world’s first Rider. Natsumi can’t contain her anger at how the world treats Tsukasa.

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Tsukasa arrives in the World of RX, where Kotaro Minami fights the Crisis Empire. Natsumi is caught in the crossfire when a new enemy attacks.

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Decade meets another Kotaro in the World of Black, where he learns that Gorgom has joined Dai-Shocker in their attempt to take over the world.

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Tsukasa lands in the World of Amazon, which is under Dai-Shocker control. Fourth-grader Masahiko is ordered to find the location of Amazon’s base.

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After stealing the GiGi Armlet for them, Masahiko finds out Dai-Shocker has tricked him. He sets off alone to get the armlet back.

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Tsukasa arrives in the World of the Rider War, where Kiva and Blade have merged. Wataru attacks the World of Blade to protect his World of Kiva.

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Tsukasa discovers the real reason the worlds are merging together. He vows to continue fighting to protect Natsumi, despite the overwhelming odds.

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