In Haicheng in 2025, criminal investigation police officer Ding Qi fell into a strange time loop that restarted at 0:00 a. M. Every day, repeatedly experiencing the "9·15 bank robbery" and the serial murders of biotechnology company executives. In the third cycle, he captured the clue that "the cycle is a cage" from the mouth of the suspect Li Wei, and found the "quantum entanglement" symbol and the secret of the "fifth cycle" in the notebook of the deceased Zhou Kai, and gradually uncovered the shocking conspiracy surrounding the "RAN gene" and the "immortality plan" - Chen Ming's team's immortality experiment went out of control, and the experimental subjects became prisoners of the cycle. In the only two cycles left, Ding Qi must join forces with the kidnapped doctor Feng Wanqing and former experimental subject Li Wei to find the quantum server, crack the termination program, break the shackles of the eternal cycle, and prevent the disaster caused by the collapse of scientific ethics.
