Super Hero Taisen Kamen Rider feat. Super Sentai: Heisei Rider vs. Showa Rider

Heisei Raidâ tai Shôwa Raidâ: Kamen Raidâ Taisen feat. Sûpâ Sentai is a movie starring Gaku Sano, Yutaka Kobayashi, and Mahiro Takasugi. A face off between all Kamen Riders. Spanning it's history, Kamen rider can be divided between...
The Underground Empire Badan makes its move, intending to invert the world. Kouta and Mai are pulled through one of these inversions where the discover a boy named Shu, who also holds the power to invert the world. As the Riders fight to protect Shu, Fifteen appears again, seeking Shu. As Kouta flees, past Riders gather and fight one another, split between the Showa and Heisei era Riders. But, the truth of Badan is not as it seems…