On a fishing trip, Fred finds what he thinks is a kitten. He takes the kitten home as a pet- which soon grows into a lion – and Fred must try to find a way to get rid of the lion, before it eats them out of house and home.

Fred and Barney build a new room onto Fred's house. After a fight, Barney discovers that the room is half onhisproperty. As a result, they have to share the room and their fighting continues.