It tells the story of Ko Dal Bun, a delicate, plant-like woman whose only life plan was to become a devoted wife and mother. Forced to survive outside her “greenhouse,” she takes an unplanned job at a suspicious company in order to regain custody of her young daughter, becoming entangled in unexpected events. The company claims to promote women’s participation in society, but it harbors something far more questionable. Having lived quietly and obediently as a dutiful daughter and submissive wife, Dal Bun discovers an unexpected talent—the ability to eliminate a person without leaving any sound or trace.