In Xinhai City, memories can be repaired, extracted and traded like data. Lin Zhou is a top memory restorer, known for his calmness and precision. He regards memory as cold amber, and he is the craftsman who repairs the cracks. Until one day, a mysterious woman named Ila brought a perfect memory crystal, but her request was to delete it completely. During the operation, Lin Zhou was horrified to find that the memory that he should not have felt had a fatal resonance with his dusty childhood trauma. In order to explore the truth, he must dive into the dangerous ocean called oblivion that he created with his own hands.