When Wang Alei was sorting out his grandfather's belongings, he found an ancient bronze mirror engraved with patterns. The moment his fingertips touched it, a bright light flashed, and he actually traveled to the old city twenty years ago. Everything here is familiar and strange at the same time. The familiar streets have red doors that have never been seen before. There is something strange in the smile of the neighbor's aunt. Even when he was young, he stared at him with unfamiliar eyes. What's even more bizarre is that he discovered that in this time and space, his grandfather should have died ten years ago, but now he is alive and his temperament has changed drastically. As Wang Alei tries to find a way back, a series of strange things happen one after another. The disappearing passers-by, the recurring midnight bell, and the increasing cracks on the mirror all imply that this time and space is collapsing. He must find the truth before the rift closes, but with every step he takes, he discovers that his connection with this time and space is far deeper than he imagined, and behind that ancient mirror, there seems to be a secret that spans two generations.
