An employee at a weapons factory discovers that an energy drink turns his co-workers into zombies.

Desmond is an underachiever working at Ammotech, a major weapons manufacturing firm, when he discovers that Zolt, a popular energy drink created by the military, has turned his boss and coworkers into violent psychopaths. Now Desmond must finally rise to the challenge in order to survive a building full of psychotic co-workers armed with the newest weaponry.