When a madman known only as the Professor baffles the government of Tokyo with bizarre ransom demands and threatens to blow the city sky high if they aren't met, it becomes clear that the only man for the job is City Hunter, the suave detective and incorrigible ladies' man. Charged with rescuing the entire city of Tokyo, including the Professor's beautiful daughter, City Hunter boldly ignores the throngs of women that throw themselves at him as he tries to stop the Professor. However, when he rescues the Professor's daughter, who may hold the only key to locating the madman, his fortitude is challenged as he tries to resist seducing her before he can save Tokyo.