In 2029, science and technology are more advanced, life and work efficiency have been improved, and this is the great pressure of life, resulting in many people have lost the interest of living, so NDE time travel company came into being. Chapman, the general manager of the "NDE" company, is the creator of the time machine, and he has gained fame as a known genius.

Vincent was selected as the first person to time travel, Time travel proceeded smoothly. But just as the company welcomes the second time traveler, Mr Chapman is murdered. Police cordoned off the company after the incident, and the real killer was inside. The company's security footage had been secretly switched off and deleted. As things progressed, many hidden things surfaced.