Nicor the mythical water demon… The monsters straddled the bay, giant black rowers, spurring flame far into the tropical night. From the belly of each a long, sharp proboscis stabbed down into the sea bed… Oil rigs. Slashing, whirling teeth biting greedily into the ocean floor, sucking deeply of its secrets. Secrets that should have remained forever buried in those peaceful waters. Oscar Blumen, a drilling superintendent is working aboard one such oil rig - ES 127. A semi-submersible anchored in the Caribbean Sea. His job, and the job of his fellow employees aboard the oil rig, is to drill a new hole… For in those Caribbean depths lurked something beyond the feeble powers of man, an abomination that the oilmen's relentless probing would provoke into a violent frenzy of retribution and surging… Amid murders, disappearances, police investigations and mysterious attacks on the oil rig itself, the crew must fight for their lives against a seemingly unreal and unbelievable monster…