Qin Huanmiao hides a wound in her heart that will never heal - in her sophomore year of high school, Mo Huaiqiu, a boy she had had a crush on for many years, jumped from the roof of the teaching building. As an adult, she discovered that she had a strange ability: she could return to the past in her dreams and change certain minor events. When she dreamed of the familiar sophomore classroom again, there was a heavy crash outside the window, and the boy fell like a bird with broken wings. Qin Huanmiao woke up in severe pain - only to find that she had truly returned to two months before Mo Huaiqiu committed suicide.
This time, she was no longer a bystander. Following the guitar melody in her memory, she reunited at a convenience store with Mo Huaiqiu, who played "The Secret That Cannot Be Tellable," and the mysterious young man Lin Zhe beside him. What shocked her even more was that in this dream world, she and Mo Huaiqiu were actually lovers, and Mo Huaiqiu knew the secret of her "traveling through dreams". Qin Huanmiao was determined to seize this illusory opportunity and make up for the regrets in reality.
However, there is an undercurrent surging deep in the dream. Mo Huaiqiu's "good friend" Meng Cheng's morbid obsession with her, the strange scars on Lin Zhe's body, Mo Huaiqiu's increasing wounds and evasive explanations... Qin Huanmiao gradually realized that this seemingly beautiful dream world was developing in a more cruel direction.
Purpose: Watch how a girl piece together the truth in the maze of memory, and learn to reconcile with her own shadow amidst countless losses.