Following a fatal accident Benthos Oil send out their damage regulator Andrea Burell to document the accident. Once she gets there she meets a divided crew all carrying their own secrets.

After a second accident the crew now is convinced that there is a stowaway saboteur on board. But who and why? A hurricane makes escape from the rig impossible and removes all hope for help from the outside world.

Morale is low and suspicion is high as each crew member questions who can be trusted.

As the state of the rig is worsened as an effect of the explosion, the remaining crew is forced to shut down power on entire levels of the rig while they try to find the killer.

Now divided into two separate groups, every hour is a struggle to survive.

A cat and mouse game commences on the desolate rig. Who is the killer and who will survive?