When Takuya's friend Hitoshi finds a strange woman's photo in his father's cookbook, he panics. Could his ultra-feminine dad really be having an affair? But Hitoshi's problems are just beginning, as an innocently dropped handkerchief leads him to a gang of bank robbers, a secret code, and more. Before they know it, Takuya and his friends have been kidnapped, and it's up to Hitoshi's dad--with a little help from Minoru--to save the day!