A group of grad students have booked passage on the fishing trawler Harbinger to study the effects of global warming on a pod of Orcas in the Bering Sea. When the ship's crew accidentally dredges up a recently thawed out piece of old Soviet space wreckage, the researchers find themselves exposed to aggressively mutating organisms that survived the harsh conditions of space, but not without mutation. The crew must fight for their lives as the creatures grow more deadly by the minute and hunt them down relentlessly.