Chan-woo,whohasbeenstudyingtobecomeapoliceofficerfor5years,joinshisfriendsfordinnertoaskforthemoneytoapplyforhisexamandendsupgettingdrunk.Hecompletelyblacksoutandwakesupnotrememberingwhathappenedinhisnextdoorneighbor'sroom.Notonlythat,hefindsabloodycorpseinthemiddleoftheroom.Hehurriesbacktohisroomandtriestoreporttheincidentbuthehadforgottenhisphoneintheotherroom.Butthedoorislockedandhehastoresorttousingaropetoswingtothenextdoorroomoutsidethewindow.Oncethephoneisrecovered,hecannotgobackbecauseofagroupofcultistswhoareevangelizingtheneighborsinthehallway.Heknowsit’sthelastdaytoapplyforhisexamandgetsantsyastimeisrunningout.