Philipp and Anna, the two Easter bunny children, are visiting their aunt Gertrud to learn how to paint eggs. However, you have nothing but pranks on your head and throw your poor aunt from one excitement to the next. Soon she will run out of nerves and drop every second egg. If it weren't for Alfred, the funny Easter bunny grandpa, who always brings Anna and Philipp to their senses. But then something really terrible happens - Philipp has disappeared. This time it's not a prank and Anna is scared because there was this mysterious stranger whom the children saw on their forays. Has it anything to do with the sudden disappearance? When Anna doesn't know what to do next, she asks Grandpa Alfred for help. And he has an idea ....