How far would you go to save your family? Marine biologist, Alex Winters, is about to find out. When a secret experiment goes terribly wrong Dawn Winters is trapped, her life is in danger and Alex is the only one who can rescue her. While Alex battles reach her, Dawn and virologist Sheena McKenzie make their own voyage of discovery. Until Gonzalez, an American mercenary arrives to clean things up for his paymaster. And the bodies begin to mount.