In the near future where memories can be read and stored, Ling Su, the top "memory stalker", is immersed in the replay of the memory of his late lover Ye Qing all day long, numbing himself with work. A seemingly ordinary suicide case of a scientist dragged him into a huge whirlpool. A familiar symbol in the deceased's memory, like a rusty key, pried open Ling Su's dust-covered memory fragments about Ye Qing's death. In order to pursue the truth, he had to dive into the most dangerous area - his own island of fragmented and contradictory memories. He will discover that forgetfulness is not shelter, and the truth is enough to turn his world upside down.
