Fourfriendswantedtogetawayfromitallforabirthdaycelebrationinaremotecountryhouse,butwhenamysteriousinjuredmanturnsupontheirdoorsteptellingtalesofacityravagedbyamysteriousepidemicandthelooterswhohavepursuedhim,thefriendsrallytohelp.Asthenightprogresses,itbecomesclearthatallisnotasitseems,plungingthefriendsintoabattleforsurvivalthatchallengestheirdeepestfears.