Exchange (2015)

Exchange 2015 Joon sik and Min hee are having a romantic trip to a remote Island There they stay at a guesthouse of Sung chul and his sister While Joon sik is heavily drunk, Seong cheols sister seduces Joon sick, so Seong cheol can rape Min hee Then a new couple comes and Seong cheol is caught attacking the girlfriend, and he kills the boyfriend Joon sick and Min hee try to escape