The life of Moonjung, the main character of Greenhouse, is not happy. She suffers from a psychological disorder, her young son is locked up in a juvenile detention center, and since she has no home, she lives in a greenhouse. She sometimes sees a man, but she’s not sure if she really loves him. However, since she is nice and sincere, she works as a caregiver for an elderly couple and gets by in harsh conditions until a tragic event happens. After the incident, her life falls into a whirlwind, and the narrative speeds into confusion. Using the genre conventions cleverly in every major part, the fate of Moonjung, who has fallen into the trap of tragedy, unfolds as a skillful thriller of pain.