Ji Sung is your ex-boyfriend who's obsessed with you, you just broke up with him for 5 days and one of your family dead, it's your brother, your brother dead because he got killed with 5 stabs on his body. Then you got massage from Ji Sung "do you like my gift for breaking me up dear? I can take your whole family if you don't wanna come back to me~" he will do anything to make you come back to him, he would kill your whole family with irrational reasons for death. What will you do?