In the near future where memories can be precisely pruned, Lin Mo, a top memory pruner, is known for his calmness. He removes pain for his clients, but he clings to an indelible pain. In an unusual commission, a mysterious female client asked to delete a "happy" memory. When Lin Mo dived into the seemingly warm memories, he discovered that there was a conspiracy hidden underneath. This memory is no longer the client's private domain, but an island of information, surrounded by a sea of forgetfulness that can swallow up all truth. In order to find out the truth, Lin Mo must break his own rules and dive into this dangerous ocean.
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