Kamen Rider vs. Shocker

Professor Daidōji has developed a gravity-generating device, the GX Device. Shocker covets it and launches an assault on the professor, destroying his laboratory, but returns empty-handed. Intelligence reveals that the GX Device's plans are in the possession of Daidōji's daughter, who is celebrating her birthday. The Kamen Riders, alongside FBI agent Kazuya Taki, must protect Daidōji's daughter and prevent Shocker from obtaining the plans.