Upon meeting Tom and Jerry, Charlie empathizes with their feelings of hunger and decides to give them a loaf of bread. Tom and Jerry show their gratitude and are motivated to make money in order to give Charlie a Wonka Bar.
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.
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.