Wu Ziran originally thought that he was just an ordinary person who had been silenced by life, until that day, Gao Keqing broke into his world with an old letter that could not be explained. He was gentle and restrained, but like a key, quietly opening the secret buried deep in the years; and when the two were forced to step into a dark mystery that spanned the ages, sweetness, redemption and backlash came one after another, and they discovered that the so-called encounter was never an accident, but an echo of fate that had already been written.
