This story follows a young man named Makoto who lives in Ikebukuro West Gate Park an area known for youth delinquency and gangs. In fact one of Makoto's best friends from high school Takeshi is the "king" or leader of one such gang called the G-Boys. Makoto is known for being tough and smart and while trying to solve the mystery of a friend's death he finds himself a somewhat unwilling helper in many mysteries and problems of IWGP inhabitants. All the while gang tension is mounting between his best friend's gang (which Makoto refuses to join) and a new gang the "Black Angels."