Zhang Yimeng, who lives in the present day, is convinced that she is a princess who has travelled from the ancient state of Xi, and she tries by all means to return to the past. An unexpected faint brings her back to the ancient state, where everything feels familiar yet strange.
Su Ye, posing as CEO Song Yuexi's bodyguard to investigate an injury case, moves next door to her for easier access. As they spend time together, mutual attraction blossoms, leading to an unexpected romance.
Fu Zeyi, a charismatic but aloof heir to Fu's Anju Group, develops a second personality, "Ge Lin," as a result of childhood trauma. Unlike Fu Zeyi, Ge Lin is melancholic, loves playing the violin, and harbors feelings for Jing Zhixia. When Fu Zeyi reunites with Jing Zhixia, Ge Lin's consciousness begins to resurface. Using brief moments of control over Fu Zeyi's body, Ge Lin helps Jing Zhixia through her struggles, only to realize she is falling for Fu Zeyi instead.
Sales wizard Ma Xiaoyuan (Yu Kening) is a hard actor with a lot of ideas, making a lot of money from his title as the heir of the Shadowless Sect. But The town is in danger when the demon king, who is trapped under the sword of the master of the Shadowless Sect, is about to come out.