In a future where technology can strip away and store human painful memories, Lin Jiang is the only lampkeeper on the "Forgotten Island". His job is to process those abandoned memory fragments through the lighthouse and turn them into harmless data streams. He isolates himself from the world day after day, using absolute rationality and rules as a shield to guard the emptiness in his heart. Until one day, an unmarked memory container was sent to the island. When Lin Jiang came into contact with that memory that belonged to no one, a familiar melody and a wisp of gardenia fragrance actually stirred up ripples in his dusty heart that were enough to overturn his entire world. Forced to choose between duty and the truth, he embarks on a dangerous journey to recover his forgotten past.