The village girl Yaoguang and the young boy Zhanfeng have been together since childhood and have a deep friendship. Zhan Feng returned from the war and ascended the throne as emperor, insisting on naming Yao Guang as queen to fulfill his youthful promise. After entering the palace, Yaoguang faced the rules and hidden crises in the palace. He stuck to his heart and trusted and supported each other with Zhanfeng to overcome the difficulties together. From resisting the prison at first to working together to protect their homeland, they finally usher in a happy future that balances mission and freedom amid responsibility and affection.