Sheng Zhi, who had advanced gastric cancer, wanted to drop out of school, but was accidentally bound to the "Xue Ren Jing" system. The system transformed into a junior student and said that tasks could be exchanged for health points and help her recover. Sheng Zhi trusted and relied on her. Xie Yuchen was jealous and "competed" with the system to treat her better. Sheng Zhi's family's business was in trouble, and his younger brother coveted the pension fund given to her by her grandma and tried to harm her. The system was blocked and collapsed, causing Sheng Zhi's health to expire and fall into coma. When Xie Yuchen rescued her, he was involved in his childhood and unlocked his memory: the system was set up by him, and the two had already made an agreement to upgrade and save her. Sheng Zhi's imitation was actually a replica of his life. In the end, the two are bound to live and die together, and they succeed when they start the relevant indefinite mission.