In the "Worry-Free City", memory erasure technology can erase all pain. Chen Mo, a top memory cleaner, lived a life as precise and ruthless as a scalpel, until a mysterious woman named Lin Wei appeared. She doesn't want to forget, she just wants to find a locked memory - a red umbrella spinning in the rain. After diving into the deep sea of Lin Wei's broken memories, Chen Mo was horrified to find that the blank memory also existed in his own mind. That red umbrella is not only her past, but also the mystery of his deprived identity. The two embarked on the road of searching for memories, but they didn't know that every step would bring them closer to a cruel truth that could overturn the entire city of Wuyou.
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