The engaged couple Hyesun and Jungho are invited to the game program "Love Money Mafia" with the chance to win 1 billion won. In a strange house with four other couples, they play one mafia game a day for a week. As the games go on, Hyesun starts feeling Jungho is hiding something. When Hyesun witnesses Jungho's betrayal she fights to escape his threat and her survival. Can she survive this game?
