A humble and rather wimpy mouse dreams of becoming Mighty Mouse in order to impress his girl, who thinks that he's a real wimp. So the wimp dresses up in a Mighty Mouse costume to try and fool her, but three bad cats get to him first to turn his dreams into a nightmare! However, the real Mighty Mouse shows up in the nick of time to save the day! And he even fixes it so the girl thinks that the wimp beat up the three bad cats! What a mouse!