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

Dogai Ryuga, the Golden Knight Garo, has regained his golden glow and destroyed the evil plots of Horror. An encounter with a mysterious knight clad in “steel” leads Ryuga to the next test. Now, the story that approaches the origin of the protector begins!

"Tradition. History. Pride. Struggle. Reflection. Courage. Beyond that, there is innovation. Don't lose your dream. Wake up." In a world shaped by the dreams we see in our sleep, ZEZTZ enters people’s dreams as an agent on a mission. Equipped with a cutting-edge Rider belt worn across the chest, ZEZTZ brings a bold new form to the battle.

After finishing the battle in Claire City, Ryuga was heading toward Line City in order to purify his armor. However, what spread out before him was a vast desert. In Sagan, a city that had barely escaped desertification, a massive outbreak of Horrors threw the city into chaos. Appearing in the city to save it from this crisis were Ermina, a Makai Priestess of the Dragon Clan, and Rian. While traveling with Ryuga toward Claire City, Rian had been summoned by Ryume and was carrying out a different mission. An overwhelming surge of Horrors, a powerful enemy clad in discarded waste, and an unidentified Makai Knight who attacks indiscriminately. On top of that, the mysterious Makai Priest Rector draws ever closer to Ryuga. Amid the increasingly chaotic battles, Ryuga and Rian are guided back into a fated reunion. After the fighting ends, Ryuga witnesses the drastically changed state of his old ally, Ryume. And as Ryume’s life comes to an end, he foretells that a great calamity will soon be unleashed upon the world. Determined to stop it, Ryuga and Rian rise to take action, but what awaits them is a cruel destiny they must bear as protectors. The battle that will shake the fate of both Ryuga and Rian now begins.

Both are Kamen Rider movies that feature a crossover between the Showa Era Riders and the mostly current Heisei Era Riders at the time the film was released.

The "rampage" of those with power, and the "resolve" of those without. The ultimate drama and psychic action is born here, where human evolution and conviction collide. A world where people began awakening to "psychic powers" one after another. Those who wielded their powers recklessly emerged, plunging the city into chaos. Amidst this turmoil, one police officer stood against them—Hikawa Makoto. He possesses no special powers, but he is an honest, clumsy man who believes in justice more straightforwardly than anyone.

Hidari Shotaro is a detective working in his beloved town Futo. But something is threatening the peace in the town - Gaia's memories, which turn people into monsters. Shotaro has a secret partner, and together they protect Futo.