Charley asks for his girlfriend's hand in marriage, but her father, the police chief, angrily refuses to allow her to marry anyone who is not himself a policeman. Charley then decides to join the police force, so that he can win her. But when he applies, he is rejected because he is too small. Charley doesn't give up, and he soon thinks of a way to avoid the size restriction - but simply joining the force is only the first challenge that he has to face.

A family of mice who live inside of a wall are trying to sleep, but Mom mouse is being kept awake by a dog snoring in the room outside of their hole. She wakes up Pop mouse, and has him go out to try to stuff cotton in the dog's mouth. Later, Pop Mouse goes out again to find some food. He finds a large piece of cheese, but he encounters some problems in trying to bring back enough for anyone else to eat.

Charley attempts to invent a non-slippery banana peel.

A family of mice lives inside a hole in the wall, just outside of the kitchen. One of the mice is ready to go out and get some food, but first he has to contend with the dog and the cat. He ties them down by their tails, and it looks safe to go out now. But then the mouse is confronted by a group of hostile and aggressive oysters.