When piles of sand start showing up all over Corman Towers, it can only mean one thing - trouble. Sure enough, a mummy has escaped from the mysterious crack in the basement. It's up to Furry and Flo to guide the mummy back to his own world. But when they fall through the crack too, Furry and Flo find themselves in a whole new world of trouble. As the portal home grows smaller and smaller, the two friends must work together to solve an ancient riddle before they're stuck there forever