Rules in Russian Roulette

In modern society, most people live freely to some extent. Humans invented the internet, and most of the human population has access to medicine for illnesses we encounter throughout our lives. However, one thing that hasn't been changing over the past decades are the numbers of people living in reality based on oppressions and everyday violence.
Baek Seunghee is one of those. Her everyday life consists of violence and chaos. Since her mother died in cancer six years ago, her life has taken a turn for the worse. Home-cooked meals and warm hugs are replaced by frequent drug use, shattered bottles of hard liquor that have driven her father into a shell of the man he once was.

But what happens when she comes in contact with the quiet, upper-class man, who claims to be the only one to save her? Will, she takes his hand or will she forever be lost in a game of Russian roulette?