Diego was separated from his family in the early days of the Infection. Since then, he has moved from town to town, and place to place — getting by as best as he can. Recently, he has met and joined up with a motley crew of other survivors. After an encounter with a pack of the Infected, their numbers begin to dwindle as members of the group begin to disappear in mysterious and macabre ways. It soon becomes clear that not everyone in the group is telling the whole truth.

Can Diego and his new friends discover the traitor amongst them before it's too late?