Jim Sloane, a successful business executive, finds himself locked in his 50th-floor office over the Christmas holiday. This apparent accident will cause Jim to miss his plane, he'll be late to see his wife and kids, and it will be yet another botched family event, ruined by work.
The phone rings, and Jim quickly answers. A garbled voice taunts, "Without food or water, the cleaning crew will only find a corpse come Wednesday morning."
Click. The phone goes dead, and the power is cut.
Isolated hundreds of feet above the city and unable to reach anyone, Jim's lavish office becomes a personal prison. Who would do such a thing, and why? Jim quickly learns that his list of enemies is long while his time to escape is short. Can he figure out a way out in time, or will he die trying?