In 2077, the earth was shrouded in a mysterious "time cocoon" and the flow of time was disordered. Lin Shen, an 18-year-old mechanic, picked up a bloody smart bracelet in the ruins, only to discover that the owner of the bracelet was his mother who disappeared 30 years ago while studying the theory of space and time. When she broke into the underground black market with the bracelet and got involved in the game between the "anti-entropy" organization and the federal government, she was shocked to realize that each participant was trapped in their own time paradox - some were pursuing the obsession of resurrecting their dead wives, while others were guarding the mission of preventing the collapse of time and space. The bracelet in Lin Shen's hand is actually the key to opening the closed loop of time and space, and it is also the switch that triggers the countdown to doomsday...
