A virus has spread over the earth and turned most of the populace into zombies who can run fast. A convoy of survivors is traveling in search of other survivors. When some zombie crows attack them, they get unexpected help from Alice who then joins the group.
Alice is hiding from a company called Umbrella who wants to grab her as her blood holds the key to immunizing themselves from the plague. Alice has clones, so I'm not sure why they can't use clone blood. Instead they spend all their time tracking Alice.
The movie didn't have any character development and the plot is pretty thin, but it did keep me entertained.