A scientist switches the minds of a dog and a cat, granting Jerry with a cat who thinks it's a dog. Tom tries to catch Jerry but is confused why Jerry's companion is not helping Tom.

Tom invites his friends over for a jazz party, but it disturbs Jerry's sleep.

Everytime Jerry rings the bell, Butch the dog will come save him from Tom. But this isn't the case anymore when a law passes that dogs will always be on a leash.

Tom teaches Topsy how to catch mice, but Topsy doesn't think Jerry deserves to be caught.

Jerry runs an academy for outwitting cats, and is teaching Tuffy the ropes.