Psychologist Feng Yixi, during the treatment process, met an aggressive patient, Lin Chenchen. And his life also fell apart after meeting Lin Chenchen—his girlfriend Hu Xiaojia was nowhere to be found, the shadows of the past appeared in his life once again, and all of this seemed to be related to Lin Chenchen. Is she a friend or an enemy after all? Is her arrival rebuilding or dismantling his life? Feng Yixi tried his best to search for Hu Xiaojia's traces, only to find that the truth was vastly different from what he had imagined.