In a future city where memories can be repaired and extracted, Lu Chen, a top memory restorer, is unable to piece together his lost past. The only thing he has is a recurring figure of a woman's back. A bizarre suicide case of a technology tycoon drew him into the whirlpool. The deceased left behind a memory chip that was maliciously damaged. The secret hidden in it surprisingly overlapped with Lu Chen's forgotten past. As he went deeper and deeper, he not only repaired the memory of the deceased, but also his own tampered life. On this isolated island built of data and neon, he must sail alone, cross the turbulent sea called "oblivion", and retrieve the drowned truth.