In the future of the Yan Dynasty, the deposed Shen Qingtang was thrown into the cold palace for the crime of "collaborating with the enemy", but it was actually framed by Concubine Shu. She and Emperor Yan Zhaoheng were once married due to a family contract. After their marriage, they gradually fell in love, but due to imperial power and misunderstanding, they drifted apart. In the cold palace for three years, the heroine expresses her feelings through embroidery, while the hero struggles between imperial power and affection, and secretly pays attention to the heroine. Concubine Shu set another trap to deepen the misunderstanding. When the heroine became terminally ill, the hero found out the truth, but he was never able to see the heroine for the last time. After the death of the female protagonist, the male protagonist posthumously named her "Queen Yuanzhao" and spent the rest of his life guarding her embroidery within the palace walls, leaving him with lifelong regrets.
