Elementary school teacher Go Gijeong has lost almost everything: her parents when she was a child, her freedom when she had to support her shut-in younger brother, and now her very dignity as the class bully among her students and his mother threaten to turn her life into a living hell. Upon meeting the mild-mannered yet inscrutable lawyer Oh Inseop, Gijeong begins to find her life changing, though little does she know that wherever Inseop goes, death follows.