team explore the deck, they are attacked and killed by unseen beings that literally rips them apart. Seeing his team is gone, CIA Special Agent Jason Bennett, who is supervising the mission from another location, orders any other government vessel in the vicinity to investigate. His call is picked up by the US Coast Guard ship, the USCGC Ravenswood, which heads to the Eastern Spirit. The crew of the Ravenswood split into teams, but within moments of boarding, only one remains; Tom Hansen, a former U.S. Army Special Forces soldier, currently serving in the United States Coast Guard, who hears his shipmates being killed over the radio. He sets out to explore the ship and determine what is happening. As soon as he enters the interior of the Spirit, however, he is attacked by two frightened Russians, who he is forced to kill. As he continues to explore, he encounters a multitude of panicking Russians, all of whom attack him. He also finds several horrifically mutilated bodies, including that of the Ravenswoods captain, Lt. Lansing. Hansen soon learns of a creature known as an "exocel", which was accidentally discovered by the crew of a Russian oil rig, the Star of Sakhalin, owned by Colonel Dmitriy Yusupov, a member of the Russian mafia, and staffed by Major Yuri Anischenko and his team of mercenaries. Yusupov came to realize the exocels were parasitic organisms, which used other living organisms as hosts, and as such, he brought Dr. Viktor Kamsky to the Sakhalin to begin experimenting with infecting various species with exocel serum. These experiments led to the discovery that exocels could re-animate recently deceased humans, and the creation of an antidote to counter infection. Hansen heads to the radio room to request help, but instead he is answered by Bennett, who tells him that Yusupov is on board and must be captured for questioning. Bennett tells Hansen that if he finds Yusupov, the CIA will get him off the ship. Hansen locates Yusupov, who tells him that Anna Kamsky, Viktor's daughter, is onboard and must be saved. Yusupov had brought her to Sakhalin to blackmail Viktor into turning the exocels into biological weapons. Eventually, Viktor and his colleague, Dr. Pavel Bakharev, began to experiment on live human infection, and the Eastern Spirit was on its way from the Sakhalin to collect the next batch of human specimens supplied by the Mafia when