Eiji Saito, a young boy, enters junior high with a strong admiration for his older brother, Kiichi Saito, a legendary figure who once led the biker gang Nakano Bosou Atobu. Eiji quickly demonstrates his own leadership qualities and a desire to become the fastest and strongest leader among his peers. His daily life with classmates is focused on this goal. When his friend Sakamoto is abducted by a new biker gang called Skeleton, based in Ikebukuro, Eiji must take action.
