In the center of the Sea of Oblivion, there is an island dedicated to sealing painful memories. The only "memory ferryman" on the island is silent, solidifying people's pain into crystals day after day, and locking it into the depths of the lighthouse. He thought that he had been isolated from the world for a long time, and his heart was as calm as ever. Until a woman named Lin Yuan landed on the island, she did not want to forget, but just wanted to find a dust-covered memory - a memory that was closely connected to Silence's own blank past. When the echo in the crystal is awakened, two souls bound by the past will face a cruel truth together on the ruins of memory.
