When Superman appears in the New York City sky, a bank robbery takes place nearby. Investigating together with Inspector McCleed, Zenigata suspects that it's Lupin's doing, but Lupin himself finds the notion simply ridiculous. Checking the banks which have been robbed, Lupin finds a small supermarket at the center of the ring they make. How will the showdown between Superman, Lupinman, and Fujikowoman end up?