At a young age Jiayang had always been told she was beautiful. She had gained everything that she has ever wanted, being the daughter of the late emperor Guozhi. After he died, her eldest brother Jianyu, ascended to the throne, building a new and powerful empire. Jiayang lived her life in peace and happiness, until one day her brother gave her to the neighboring empire, as a peace offering and as a concubine! Jiayang then faced a new problem, she was a concubine among many, trying to earn the favor of the emperor. She now has to face many challenges in her new kingdom to be happy!

One Year, that's what they agreed upon. That's why she worked so hard to please him. That's why she did everything in her power to help him and his people. So she could live her second life, the way she wanted. In peace. One Year, they promised each other. To live a life as husband and wife. One Year, to convince everyone that they were a loving couple. One Year, to gather information on his enemies. One Year, to gather as much support and power from the royal court to his side. One Year, of playing pretend and fooling the whole Kingdom of their fake love story. Little did she know, it only took One Year for him to fall in love with her. Will he keep to his word of One Year? Or go back on it and break their promise?