In order to protect the family, Luo Nuoxi entered the palace as a concubine in her eldest sister's place. She thought she was facing only a competition for favor in the harem, but she didn't know that she was already an outcast in the chess game between her father and her brother Luo Haoxuan. When sincerity collides with calculation, can she find a way out for herself in the deep palace where people's hearts are chess pieces?