In New Era City, memory is a commodity that can be edited, stored, and deleted. Lin Mo, a top memory architect, is responsible for building flawless memories for customers. However, an unexpected data redundancy caused him to start flashing back to fragments that were not his own, filled with smoke and mourning. A mysterious woman holding a red umbrella repeatedly appears in his hallucinations, leading him to a forgotten corner of the city-the Old City. There, he discovered that the "perfect life" he was proud of was just an island of carefully constructed memories, and what surrounded him was a sea of forgetfulness that could swallow up all truth. He must find his stolen past between reality and illusion.
