Zhou Ji, once an elite member of the police force, blamed himself for failing to prevent a serial murder case. When he was trapped in a mysterious building shrouded in fog, he unexpectedly gained the ability to travel through time and space - every time he died, he could return to a specific point in time and keep his memory and start over. Time lines are intertwined in this building, and each secret room hides clues related to past cases. Archival Zhou must take advantage of the information gap in repeated cycles to uncover the truth behind the building, while facing three villains with their own agendas. As the investigation deepens, he discovers that it is all related to a mysterious organization "The Eye of Time", and in the end the BOSS is his most trusted mentor. In the dilemma of saving others and redeeming himself, Zhou Ji must make sacrifices in order to break the cycle and prevent greater tragedies from happening.