George is an ordinary application developer who suddenly realizes that he is repeating his life for six months. Soon, he is recruited by a mysterious organization that reverses time from time to time to prevent the end of the world. Only a few special people (including him) can do this. Once he joins the team, he will be brought into a high-risk world full of doomsday threats and super villains. The team will work together to stop some terrorists from detonating nuclear weapons, curb epidemics, wars, nuclear destruction, etc., using their wisdom and various skills to save the world.