Ella (Barton) sneaks off one night to snoop through her fiancee's storage unit on the seedy outskirts of town. But deep in the lower levels of the warehouse, Ella and a half dozen storage unit customers discover there's more than old furniture and memorabilia being locked away here.

A relentless psychopath has started his own "collection," and unless Ella and the others can survive the blood-soaked rampage of the Hoarder, and find a way out of the maze-like building, they'll never see the light of another day.