Because of political reasons, princess Li Rong and Pei Wenxuan got married at the age of 18. In the end they drifted further and further afar from each other. After 20 years of a loveless marriage, they were manipulated into turning against each other, leading to their deaths. However, they wake up back at 18, before their marriage, facing the hardest time of their lives. The two of them are given second change together, to save those around them.

Photographer Mo Xiangbei becomes pregnant just as her boyfriend, Mu Yinan, focuses on his rising career. Feeling neglected and suspicious of his absences, Mo Xiangbei 's world shatters after the loss of her mother and unborn child. She leaves her old life behind, moving to Dali to open "Regret Inn," where she embarks on a journey of self-discovery and healing.

Chen Huan’er, along with her friends Jing Xichi and Song Cong, navigates the journey from high school to adulthood. Together, they experience love, loss, family struggles, and personal growth. As life takes them in unexpected directions, their enduring friendship remains a constant through every challenge.

Cheng Lele, having offended her boss, is secretly demoted and returns to her hometown to manage the struggling Xingchen Cinema. Unexpectedly, she reunites with her ex-boyfriend Chen An, and their new circumstances lead to a series of comedic situations. Together, they navigate their relationship and the challenges of reviving the cinema.