Popular web novelist An Anyu has hit a creative block. With the National Day holiday just around the corner, she hopes to get away with her boyfriend for a change of scenery and find inspiration and her writing stride again.
By chance, she learns about a place where she stayed with relatives when she was seven. Oddly, she has no memory of that time and the place feels unfamiliar to her. Driven by curiosity, An Anyu becomes interested in the place and decides to investigate. But her boyfriend gets called in for unexpected work, and not wanting to distract him, she decides to leave ahead of him and figure out a way to meet up once he's finished.
But things don't go as smoothly as planned. Strange events keep occurring, and memories from her childhood come flooding back like a torrent. What really happened twenty years ago?
A murder case from twenty years ago, a mysterious person, a guesthouse in the city, an art museum: all of them seem to be connected in ways that remain hidden.