Butterbean is bored. She and the other pets pulled off a heist once, but that was like a million years ago. Nothing exciting has happened since then. That is, until Mrs. Third Floor shows up at their apartment, convinced there's a ghost in the building. Mrs. Third Floor's rental unit is showing signs of paranormal activity--eerie noises, objects moving when no one is there, fish disappearing from the tank overnight. The pets decide to investigate....