After catching her husband cheating with another woman, Sun Jae takes her young daughter and moves into a dilapidated old apartment building to start a new life. Heading home from work one day, Sun Jae finds a strange pair of high-heeled red shoes located inside her subway car, and decides to take them with her. Unfortunately, these shoes are cursed and cause unspeakable repercussions for those foolish enough to try them on.