Jiang Shang's life suddenly changed when he was thirteen years old. His father passed away in a traffic accident, and his mother was deeply affected and eventually passed away, leaving her and her grandmother to depend on each other. She studied hard with the belief of being admitted to a top university, and became roommates in high school with her former junior high school classmate Xu Qinglin. The two promoted each other academically and became the best on campus. Xu Qinglin also became an important support in her life.
However, setbacks came one after another. The daughter of another family involved in her father's accident was transferred to the school, turning her dissatisfaction with the Jiang family into unfriendly behavior towards Jiang Shang. Although Xu Qinglin helped to relieve the pain, the death of her grandmother once again dealt a heavy blow to her. Just as she gradually regained her confidence, an even greater misfortune happened - Xu Qinglin died unexpectedly near her residence. Jiang Shang failed to take the entrance examination and went to another country amid various discussions.
Many years later, she was recalled by a phone call regarding doubts about Xu Qinglin's death. In the process of understanding the situation, she discovered that the experiences of the Xu and Jiang families were related to her father's accident, and she met a man who looked similar to Xu Qinglin. Just when the truth was about to be revealed, an accident brought her back to her high school days.
In a special experience, she and Xu Qinglin jointly investigated and discovered the complex truth behind the incident: someone planned the changes that year in order to obtain profits, which led to the misfortune of many families. They work together to uncover the truth, complete their studies, start a family, and live a good life.
After returning to reality, she worked with her collaborators to bring the truth out through legal channels. After fulfilling her wish, she lived peacefully in a foreign country, and finally passed away peacefully, reunited with her relatives and friends in her memory.
Intention: The redemption of obsession