Bloo discovers a door in Foster's that everyone is forbidden to open, and nobody tells him what's behind it. One night he opens it, and releases Scribbles, a friend that does jobs around the house and causes everyone to become lazy.

Mr. Herriman sends Frankie to the mall to get streamers for Madame Foster's birthday party, and Mac, Bloo, Eduardo, Wilt, and Coco end up coming along. Eventually, they each wander off in a different direction after being distracted by something.