In the new Kyoto of 2077, memories can be retrieved, stored and traded. Lin Zhou is a top "memory salvage man". He dives into the huge sea of data formed after the abandonment of human consciousness - the "Sea of Oblivion" to recover lost memory fragments for clients. He is calm and efficient, using the memories of others to numb his blank past. Until a mysterious commission led him to an island of memories that belonged to no one but was extremely familiar. There, a burning lavender field and a blurry figure turned out to be his own core memory that had been forcibly deleted. In order to explore the truth, Lin Zhou must sail into the most dangerous storm in his heart, fight against the huge waves of forgetfulness, and face the secret that he once wanted to bury at all costs. Every deep dive is a gamble with one's own soul.