Maisy the mouse and her friend Charley clean her house together and then treat themselves to cupcakes.

Saying nope to soap, little bunny soon learns the importance of protecting himself and others from germs when he catches a cold and is sent home from school.

When a boy leaves cupcake crumbs in his bed, what's the worst that can happen? It's no big deal ... until Vlad shows up and wants an entire cupcake. And then more barbarians take over the TV room ... and the garage! They use the school supplies to scratch their hairy backs! The exterminator won't take the case, and mousetraps don't work. What can the family do?