Yu-jin is a single mother who raises her son, Ji-hoo, alone. One day, Mi-hyun, the owner of the delicatessen where Su-jin works, finds out from Ji-hoo that Su-jin is a single mother and decides to become a member of the church Su-jin attends. Over time, Mi-hyun’s care for Su-jin turns into an obsession, and as her life becomes increasingly intertwined with Su-jin’s, strange events begin to occur in the mother’s life. Su-jin begins to feel a growing threat as she tries to protect her son and unravel the mysteries behind Mi-hyun’s actions.
