Leonardo is a terrible monster -- he can't seem to frighten anyone. When he discovers the perfect nervous little boy, will he scare the lunch out of him? Or will he think of something better?

Trixie can't wait to bring her one-of-a-kind Knuffle Bunny to school and show him off to everyone. But when she gets there, she sees something awful: Sonja has the same bunny. Suddenly, Knuffle Bunny doesn't seem so one-of-a-kind anymore. Chaos ensues until the bunnies are taken away by Ms. Greengrove. After school, Trixie finally gets her beloved bunny back. But in the middle of the night, Trixie realizes something. She has the wrong bunny! Daddy...