Kamen Rider Ichigo & V3 Collection

College student and motorcycle enthusiast Takeshi Hongo is abducted by the evil organization Shocker and converted into a cyborg as part of their plans for world domination. Before they can brainwash him to do their bidding, he escapes and uses his new enhanced abilities as Kamen Rider to wage a one-man war against Shocker.

Professor Daidoji has developed a gravity machine called the GX Device. Unfortunately, Shocker wants it; so they attack the professor and destroy his laboratory, but come home empty-handed. Shocker's agents find out that the plans for the GX Device are with Daidoji's daughter, who is celebrating her birthday. Now the Kamen Riders, along with FBI agent Kazuya Taki, must protect Daidoji's daughter and prevent Shocker from obtaining the plans.

This film pits Kamen Rider 1, and FBI Agent Taki against Hell's Ambassador (who was on the tv series at the time of this film's release). Hell's Ambassador sends out reborn Shocker monsters (from the tv series and first movie) out to kill Taki and Hongou.

During a battle against Destron's forces, Shiro Kazami helps a priest who has been attacked by the evil organization's kaijin Hasami-Jaguar. Little does he know that the church where the priest resides is a front for a Destron hideout. After finding out the organization's latest motive, Kamen Rider V3, along with the Double Riders, must stop Destron from detonating a nuclear bomb in Tokyo.

Kamen Rider V3, trying to protect a family from Destron, is outnumbered by Destron soldiers, and Dr. G. (Dr. G is from the V3 tv series). So, Kamen Rider 1, and 2 (who were in Austrailia thought to have been killed in episode 2 of the V3 tv series) come to help.