In the near future where technology can accurately delete or reshape memories, Lu Chen is the top memory repairer in the industry. Known for his calmness and precision, he is able to erase any pain from his clients, like a surgeon of the soul. However, his own heart is an isolated island surrounded by the sea of forgetfulness, sealing a painful past about the disappearance of his sister. When a mysterious woman named Su Wan comes to the door with a seemingly impossible request - to repair a broken memory about the lighthouse and the waves, Lu Chen discovers that the fragments of her memory are closely related to his own buried secrets. He was forced to dive into the sea of his most fearful memories. While searching for the truth for her, he also began a self-confrontation about redemption and destruction.
