On the isolated "Wangchuan Island", the job of the memory ferryman Ah Hang is to help visitors unload their painful past and seal them in the deep sea. He is calm, professional, and seems to have neither sorrow nor joy. He is the perfect gatekeeper of this sea of oblivion. Until a woman named Ling Shuang arrived, the memory she wanted to peel off turned out to be like a broken mirror, reflecting Ahang's dust-laden past. When the alarm of the instrument pierced the tranquility of the isolated island, two life trajectories that should have been forgotten began to intersect. Ah Hang was forced to face a cruel truth: he was not only a ferryman, but also the longest-lost drowning person in this sea of oblivion.
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