V3 is saved by the voices of the Double Riders coming from a special medallion. In Shikoku, Kazami Shiro disguises himself as a Destron sympathizer to repair the SS Device. Meanwhile, Fukazawa, Tachibana Tobee and Tama Junko fall under the control of Syringe-Spider! Can V3 stop Doktor G's conquest plans and find the antidote to save his friends from the clutches of Destron?