Five high school seniors—Wang Huanyu, Han Shuai, Guo Ting, Wei Xing, and Shi Wenke—are at a crossroads in life, struggling with their uncertain futures. As they deal with the challenges of growing up, they experience the complexities of family, friendship, and first love. Along the way, they support each other through moments of joy and sorrow, learning to navigate their paths and stay true to their dreams despite the turmoil of adolescence.
Ruan Liuzheng returns to her hometown after seven years, and becomes a neurosurgeon at Beiya Hospital. However, she didn't expect to meet her ex-husband, Ning Zhiqian, who is the most experienced neurosurgeon. Ruan Liuzheng is no longer the weak and timid girl, and she shows resolute and determination in both her work and relationship. When they were in Africa to execute medical relief efforts, Ning Zhiqian was injured in a gunshot. Ruan Liuzheng didn't leave his side, and fought hard to save him from the brink of death. The two have gained a new understanding of life, and begun a new relationship again.