Based on

Movies like Cube Zombies (2007)

In the dark offices of Advanced Systems Incorporated, four sleep-starved software engineers are forced to work through the night. Slowly at first -- and then with growing paranoia -- the four begin to suspect that their manager is a voodoo zombie master exercising supernatural control over their thoughts and actions. The fiendish plot must be stopped! But without sleep, the night just keeps getting weirder and weirder.