When the maid of the Weaving Mansion stepped into the palace with her amazing embroidery skills, she found that everyone regarded her as a pawn. What's even more deadly is that every embroidery needle in her hand can read the wearer's memory, emotions and even the cause of death when sewing clothes. When she was embroidering the shroud for the concubine, she discovered that the concubine's death was not an accident; when she was embroidering the prince's uniform, she saw a secret letter of collaboration with the enemy hidden in the prince's study. She became the most dangerous existence in this deep palace - because she could see past events that everyone thought had been buried.