In the Dachanghe Kingdom, a pharmacist named Bai Suer settled in a bamboo hut in the Blue Moon Valley and made a living by treating villagers. She was supposed to spend the rest of her life in an ordinary way, until one snowy day in late winter, she met a man named Xiao Yi. He was covered with wounds, and she healed him.
When she was diagnosing him, she overheard him calling herself Princess Pingyang. Everything seemed to go back to the palace six years ago. She was still a carefree little princess at that time, and the person she loved was also the man named Xiao Jing... In the days when she lived with Xiao Yi, she frequently learned about what happened six years ago. When the truth of the matter came to light, she could no longer hold back. She was determined to go out again as Princess Pingyang to eradicate the Zheng family that was in power at that time. However, things were not as simple as she imagined. On the way to revenge, she suffered many setbacks. With the frequent appearance of Bamboo Butterfly, another truth gradually surfaced...
In front of her is the revenge plan exposed in the eyes of her enemies, and Xiao Yi, who has been in love for a long time. There is another voice in her heart calling her to go back. Where should she go...