In the near future, memories can be repaired and tampered with. Lin Mo is a top "memory restorer". He can sneak into other people's broken memories and heal the trauma, but he can't piece together his own blank past. One day, a mysterious woman named Su Qing brought a strange commission: to repair a happy memory that should have been flawless. When Lin Mo sneaked into the seemingly sunny beach of memory, he discovered that there was unspeakable fear hidden behind every smile, and every sound of waves echoed the melody of lies. This is not just a restoration, but a dangerous quest. What he will uncover is not only Su Qing's dusty secret, but also the truth related to his life experience that can subvert the entire world.