Due to an accident, Zhou Cheng, who is highly intelligent and indifferent, was bound to the "Life Retrieval System" and was forced to travel back to high school repeatedly to complete designated tasks. His ultimate goal is to change the death outcome of his classmate Si Xiaoyi. However, every time he traveled through time, he discovered that there was a deeper campus conspiracy hidden behind Si Xiaoyi's death. In the looping timeline, he must complete various "rescue others" side tasks issued by the system to obtain clues. At the same time, he must battle wits and courage with the hidden villains, and face the sincerity he once ignored. When the truth is revealed, he will face the system's final cruel choice: save everyone, or leave her alone?
Purpose: The process of saving others is also a process of saving the once indifferent and selfish self. True strength comes from reverence and gentleness for life.