Kamen Rider V3
Shiro Kazami saw a murder by the evil organization Destron, making him their next target. After several failed attempts on his life, Shiro rescues Junko Tama, a woman who also becomes Destron's target after stumbling upon the organization's main base. In an attempt to kill both, one of Destron's monsters storm Shiro's house and kills all members of his family, the duo rescued from certain death by Shiro's high school teacher, Takeshi Hongo, also known as Kamen Rider 1 and his partner, Hayato Ichimonji Kamen Rider 2. Driven with vengeance, Shiro asks the Riders to be transformed into a cyborg to fight Destron. At first they refuse, but were forced to comply to save his life after he is injured while saving them from danger. Becoming Kamen Rider V3, Shiro swears to protect humankind against Destron. Later on, he is joined by Joji Yuki, a former Destron scientist who fights as Riderman to get his revenge on Destron for being accused of treason.