In the 1980s, at the base of a high-tech R&D company in the eastern United States, the [Special Science Team] (S. S. T.), Composed of 33 special senior technicians and chemists, was carrying out a secret mission. A secret mission that even internal staff did not know what its purpose was - genetic recombination to extend life or immortality. Under the plan of the company's top management, two technicians, Elsa and Mark, were selected from S. S. T. To undergo human trials. Because the company had used some unscrupulous methods, they had no choice but to accept it. Just after everything was ready and the two were put into the laboratory, the company's R&D base suffered an accident and damage, resulting in the loss of information and the loss of all test products and files... Twenty years later, in 2008, E, who had been dormant in the experimental incubator, was rescued by a local peasant woman. What is shocking is that E did not age with the passage of time, and his age stayed at 20 years ago; E tried every means to find M, and finally learned that he had been rescued and went to China. At the same time, the head office secretly sent scientists to the local area, intending to bring E back to the company. E finally learned the company's ulterior secrets, and went to China with anger, sadness and a new identity to find her lover. After settling in Shanghai, she worked and looked for M, but her private life outside of work was not as peaceful as she imagined. At the same time, M, whom E was looking for day and night, appeared in front of her. At this moment, M was no longer the same person as before. E vowed to make M change back to his former self, but all these efforts seemed to be a waste of time...