In the future city "Xindu" where memories can be extracted, repaired and even traded, Lin Mo, a top memory restorer, can only repair the blank past in his mind. He is like an island floating in the torrent of time, calmly piecing together the broken lives of others. One day, a mysterious woman named Xiao Wan brought a "Memory Crystal" that was on the verge of collapse and asked to erase a painful memory about the lighthouse and the storm. When Lin Mo dived into that memory, he was shocked to find that at the end of the memory, stood an extremely familiar yet completely unfamiliar figure - himself. In order to find his lost self and unlock Xiao Wan's secret, he embarked on a dangerous journey upstream to find out the truth.
