Fifth delivery in the Tarao Bannai series, following the "master detective with seven faces" who uses his signature disguise to solve crimes with a double-barreled pistol.

Detective Tarao goes undercover to battle an evil gun smuggling business.

Private eye Bannai Tarao (Chiezo Kataoka) and his assistant Masako (Chizuru Kitagawa) investigate the mysterious murder of a baseball player who was killed in the middle of a game.