The heroine, a lowly palace maid in a cold palace, couldn't bear it when she was ordered to throw stones into an abandoned well. She secretly threw stones into the well and discovered that the former prince was in the well after being imprisoned for three years! In order to save the prince, she exchanged hairpins for dressings, set fire to send messages, and narrowly escaped death many times. She incarnates as a spy in the palace, dealing with the conspiracies of the treacherous nanny and Prince Jing. She uses her meager power to help the prince outwit the secret key of the East Palace and stir up trouble in the palace. An encounter in a cold well forged a life-and-death bond. The humble palace maids joined hands with the troubled prince and worked step by step to counterattack from the desperate situation of the cold palace and play chess together in the world!
