Reportedly, this is the only Mighty Mouse cartoon to be nominated for an Academy Award. I fail to see why it deserved the honor. The first Mighty Mouse short--before the super-rodent was even named Mighty Mouse--"The Mouse of Tomorrow" (1941) at least had a couple jokes based on parodying the cartoon "Superman" (1941) and the pun of becoming super via a supermarket. What's the appeal here? Some inconsistent singing that turns operatic?
Otherwise, there are some nomadic mice depicted as stereotypical gypsies. They are attacked by giant bats. You know that the Roma are the good guys because they wear clothes, and the bats are cartoon coded as evil because they're nudists. To the rescue comes another flying, but also costumed, mouse. No longer a Superman burlesque, Mighty Mouse was his own thing by now. And it's quite bland. It's a film that manages to elicit hardly a response from me. It may've been of some interest had they done something with the bats, such as making them vampires to imitate classic horror films. Or better yet, had they made a parody of Batman, so that we could see Bat-Mouse v Super-Mouse.