Xu Xinyi a solitary lives alone in Chongqing went for a date which unveils a connection to her past through a shared acquaintance, Ann. Memories of university days resurface, how she met Ann when her life was totally swifted and how Ann guided her through all the difficult time with maturity. However with stronger connection to Ann, Xinyi slowly notice the differences and the hidden story of Ann's life behind her maturity and confidence. Slowly without notice their relationship faded and started their own new life. With the guy she met in date, life gave Xinyi a new chance whether to reconnect with her past and her long lost friend Ann.