Your mother passed away since a few years ago and left you alone with your father, who treats you terribly and doesn't take care of you, plus you got a lot of bullies at school that makes fun of your dead mother. Han jisung is your cousin that moved from the USA this summer, so now he'll go to the same school as you and live in your house, but he has no idea of what you go through all the time. It's midnight and you knock on his door