A young, confused Pauly, copes with stress as his parents face divorce. After bumping his head (we're not in Kansas anymore), Pauly encounters an unparalleled environment where his apartment building is overtaken by alien beings out to destroy every last soul. The boy must traverse through the building like a mouse in a maze as he avoids unusual obstacles and creatures set out to defeat him. Pauly intends to save his mother while ultimately fleeing Belgium Building.