Dai Jingxuan accidentally became the "scavenger" of the Space-Time Healing Bureau, and his mission was to heal historical trauma in exchange for survival points. When he took on the most difficult task of curing Tian Yaqing, a girl who committed suicide due to school bullying, he found that every intervention in time and space caused a more violent loss of control. He must play a winner-take-all extreme game with time itself on the tightrope of salvation and destruction.