When the evil Ortka signed a contract with a man and released the Spider Death Attendant, Igarahi transformed into the Carmen Knight Ravi to stop them. Beside him is Kamen Rider Vice, a demon living in his heart, who has reached an agreement.
16岁的少女松前绪花(伊藤かな恵 配音)是一个自由生活在东京的普通女高中生。一如这座虽则繁华却死板枯燥的大都市,她的生活平淡无味。正处在幻想的年纪,绪花时刻期盼着“突然的夜奔、突然的爱恋、突然的离别”这类事情的发生。