When Ash McCarthy wakes up in some sort of medical facility he immediately knows something is wrong. But he doesn't suspect just how much until he steps outside and finds himself on a remote tropical island. Then he smells the blood and begins to find the bodies. A deadly virus has been released and, to make matters worse, it's being taken off the island to be sold as a weapon that could wipe out humanity. The antidote is being taken with it and, unless Ash can stop them within 24 hours, everyone on the island who has been infected (including Ash's mum) will die.