Stella's dog Sam breaks a window and runs away. Stella panics and writes a letter to Sam, not knowing he was the one who broke the window. Stella's friend overhears Sam talking to a cat about switching owners. Stella faints but eventually, Sam and Stella
Stinker the cat writes in his diary about his dislike for the new dog, Diesel, and his attempts to get rid of him. Eventually, Stinker and Diesel become friends.