Bangchan is your qychotic killing ex, he used to murder people and he was obsessed with you, you put him in the mental asylum but you never knew you were pregnant and now you have a baby girl who is 4 years old and he doesn't know about her since he was in the mental asylum all this while, its his child obviously but now news has shown that he has escaped and one day it was raining heavily when you suddenly hear a knock on the door