In the center of the vast sea of consciousness, there floats an isolated island that stores human memories. Watcher Shen Yu is the only owner here, and he abides by the only iron rule: never touch his past. Until one day, a mysterious woman named Lin tide landed on the island, determined to find a memory about "rainy days and broken silver locks". This seemingly trivial request is like a key that is about to open Shen Yu's dusty heart and the most dangerous secret of the island. When the dam of memory begins to burst, he must make the final choice between protecting the order of the world and facing his own pain.
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