Watch "Gundam Build Fighters" on Netflix Japan

Sei is an aspiring Gunpla champion who has good building skills, but is poor at battling. Will the mysterious Reiji be able to help him?

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After staying at Sei’s house and following him to school, Reiji gets challenged to a battle with Gonda, a member of the student council.

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Inspired by Yuuki, Sei works on improving his favorite Gunpla. Reiji heads to a Gunpla store to work on improving his skills in battle.

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Sei and Reiji continue to win at the Gunpla Battle tournament. China is rattled when she sees Sei becoming friendly with a girl who knows her Gunpla.

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Sei is thinking up ways to improve Build Strike for his battle with Yuuki when he is challenged to a battle by a newcomer with serious skills.

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Yuuki suddenly refuses to participate in a rematch Reiji and Sei have anxiously anticipated. Dejected and now aimless, Reiji roams the city streets.

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Sei and Reiji go to the seaside with family and friends. At the hotel, they run into Mao, who announces his plan to vie for the world championship.

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The preliminaries begin in Japan and around the world. In the US, a young genius called Nils shocks the world with his skills.

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Sei is busy building a new Gunpla for the world championships. After falling into a slump, he is cheered up by a request from China.

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The Gunpla Battle World Championships begin. As the best in the world advance, Sei and Reiji unveil their latest Gunpla: Star Build Strike.

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The mysterious Meijin Kawaguchi appears at the end of the first day of the tournament. Sei and Reiji must triumph in a battle royale to stay alive.

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A large-scale Gunpla suddenly enters the battle royale. Reiji and Sei decide to fight back against the overwhelming odds using Star Build Strike.

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In the third period, participants are only allowed to use original weapons chosen by the sponsor. Sei and Reiji battle Thai champion Luang Dallara.

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Sei and Reiji continue to earn points and move on to the seventh period: a three-lap Gunpla race around a specially designed course.

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Sei and Reiji finally advance to the last period, but they must beat the undefeated Italian champion Fellini to advance to the next tournament.

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Sei runs out of ideas for improving Star Build Strike. Reiji offers to help, but decides to take a class on building Gunpla after being turned down.

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The tournament to decide the world champion has begun. Sei and Reiji face Mao in the first round, thus fulfilling their promise for a rematch.

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The Renato Brothers from Argentina topple Luang with their tactical skills, and face the aggressive Kawaguchi in their next battle.

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Sei and Reiji’s next opponent is formidable: Nils, the boy genius who uses techniques and weapons based around Plavsky particles.

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The quarterfinals have begun, and the playboy Italian Fellini is facing off against Aila Jyrkiainen from Finland, who remains undefeated.

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Aila and Reiji face off, with Reiji swearing that he and Sei will defeat her. Reiji’s anger causes Aili to doubt her current position.

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Kawaguchi’s opponent in the second round of the semifinals is suddenly changed to Julian Mackenzie, a British master of Gunpla battles.

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The finalists for the Gunpla Battle World Championships have been decided. After finishing their preparations, Sei and Reiji meet someone unexpected.

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A heavy atmosphere envelops the stadium as the final tournament begins. Sei and Reiji face off against Kawaguchi, who is thirsty for victory.

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The Plavsky particle crystals undergo a runaway reaction, causing panic in the stadium. New and old fighters band together to prevent a disaster.

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