Two days before Christmas, Andrea is sent by Benthos Oil to investigate a fatal accident on the company's North Sea rig. Faced with silence and a raging storm that cut off communications, she and the crew soon realize a killer's on board.

One crew--one killer. Andrea (Catherine Walker), a damage regulator from Benthos Oil, is sent out to Rig 45 two days before Christmas to investigate a fatal accident. When starting to investigate, Andrea finds that the crew of the rig is unwilling to talk to her and she has a hard time finding out the truth. Just when the rig is hit by a hurricane and all forms of communication to the mainland is cut off, the crew realize that the accident is in fact a murder, and that now they are in real danger. Who is the killer among them?