The Exodontists dream of bleach and teeth...and run a free dental clinic out of the abandoned warehouse they call home. Red, their patriarch, dreads the day his beloved family will ask him exactly where they came from and how they became family...

But when Spirit Halloween (a chain Halloween store) takes over the Exodontists' warehouse, Red and his clan must confront human invaders. When Garrett, an employee of Spirit Halloween, sneaks into the Exodontists’ home to hide a cadaver, the Exodontists accidentally convert him. Furious at the loss of his self and humanity, Garrett converts the Exodontists/ warehouse into a hellish gauntlet of jerry-rigged traps, challenging the Exodontists to venture in and return his teeth—or die. Red has six hours to brave the gauntlet and defeat Garrett, or face the ultimate destruction of his beloved, monstrous family...