This is a story about how guilt is seen and released.
36-Year-old Lin Xu has been tortured by a dream that has been repeated for 25 years: on the primary school playground, a boy invited her to run. She ran slowly due to inexplicable motives, and watched helplessly as the boy was taken away and executed on the top of a mountain in the distance. The news of the demolition of her hometown primary school made her decide to pursue the truth.
She discovered that the boy's name was Chen Du, a transfer student who had "disappeared" long ago. The clue points to an ancient tradition: Chen Du comes from the "Dumen", a family that endures suffering on behalf of others. In order to save his seriously ill mother, he chose to transfer his misfortune to himself, and Lin Xu was the "anchor" he chose. Her survival was based on his self-sacrifice.
In the end, Lin Xu understood that it was not the ghosts that had tortured her for more than 20 years, but the deprived right to know and choose. She completed her farewell by designing a memorial park, transforming nightmare memories into a deep understanding of the fragility and sacrifice of life, and finally reconciled with herself.