简介：Trappedinaroomwithonlyonedoorandnowindows.Theircellphonesdonotworkandnooneoutsideofthebuildingcanheartheircallsforhelp.Thegroupofsevenpeopleisundersiegeastheshapeshiftingcreaturetriestoseepinside.Theyarepickedoffonebyoneuntilitisobviousthattheycannotoutwaitthispredator.Aplanishatchedtoretrievethecasethatthecreaturecameintoseeifitholdsanycluetocontrolitordestroyit.Whentheyfinallydogetthecasethecreaturebreaksthroughtheroom'sbarriersandtheyhavetorunamacabregauntletthroughthebuildingtotheoutsideworld.…