The Leap Management Bureau is a specialized organization that manages illegal time and space travelers. Adhering to the principle of 'turning the wheel of history, everything cannot be chaotic', it takes illegal time and space travelers back to normal time nodes to prevent changes in historySomething happened. Chen Ling and Ouyang Yi are a pair of intermediate law enforcement officers and low-level clerks from the management bureau, working together to carry out tasks. Due to Ouyang Yi's youth, persistence, and being possessed by Chen Ling with simulated intelligenceBeing able to be stimulated by robots, being ridiculed by colleagues and indignant, Chen Ling decided to carry out tasks alone. As a friend and boss, Chen Ling was not at ease, so he brought the robot Purple Core back to a day two years ago to help OuYang Yi carries out the task. But when they successfully brought back the illegal leaper Li Chuan for the first time, they found that Li Chuan had returned to two years ago. The mission failed, and the two had to go back to the past again to investigate the situationThe truth behind it. Chen Ling and Ouyang Yi finally unraveled the mystery while following Li Chuan through time and time again.