简介：Woo-hyeonisayouthinhis20swhowanderaroundtheSinchonmodelareawithnoparticularjobandhisgirlfriendsellsherselfforaliving.Woo-hyeonfeelsinterestinhisgirlfriend'sprivateareawithatattooofanarrowandcallsitthe'exit'.Thenoneday,sheisabusedbyaclientbecauseofthe'exit'.Oneend-of-the-yeareveningwithChristmascarolsringingoutfromthebackgroundatartdirectorJeong-sooandYeong'shouse,adummyofaschoolgirlliesinthecorner.Jeong-sooandYeong-seonwaitsforsomeonewiththecreepydummylayinginthecorner.Amoviedirectorarriveslateatnightandheadsstraightforthedummy...Mi-jeong,theheadofdepartmentofanactingacademy,feelsthedesiretourineeverytimeshelooksatherwatch.Shegotthisqueersymptomwhenshewasstruckbylightningwhenshewasyoung.OnedayshecomesacrossagroupcalledAdadwhichisfullofpeoplewhohavebeenstruckbylightning.ThemembersallhaveastoryoftheirownandMi-jeongdoesn'tgetalongwiththemwell.Thenoneday,leaderoftheteamDong-gyusuggeststheyleaveonalightningexplorationadventure.