Former polygraph expert Shen Tingyan received the diary of his late girlfriend Lin Wan and followed the clues to the isolated town of Wangchuan. The hot springs here are so dense that everyone keeps them secret. He soon discovers that the town's "pool of lies" can make words come true, at the cost of devouring memories.
When the first person who made a wish came true, and when everyone's memories began to distort, Shen Tingyan fell into a crisis of trust. The gentle doctor Gu Qingzhu takes the initiative to help, but always hesitates to speak at critical moments; the mysterious mayor Wei Zhinian shows kindness gracefully, but secretly controls the memory of the entire town.
As the investigation deepened, Shen Tingyan discovered that Lin Wan's disappearance was surprisingly related to the collective forgetfulness incident twenty years ago. In a town where the truth disappears and lies can come true, he must use the final truth to fight against tampered memories. When the water in the pool surges and the fog clears, what awaits him is not only the cruel truth, but also the ultimate choice between existence and forgetfulness.
This diary is a distress signal and a prediction of death. In a town where everyone is forgetting, he is the only one who must remember everything.
