Shang Gong Xiaoyu travels all the way from the United States back to China. She spends two years at Tianqin Senior High, where she has a tumultuous romance with Xue Haoyu, a spoiled troublemaker at the school. She also wins his undying love. On the morning of the new term, Xue Haoyu doesn’t notice that Shang Gong Xiaoyu is absent. Gradually, he hears that her entire family has mysteriously disappeared. At first, he doesn’t think anything is amiss. But half a month after Shang Gong Xiaoyu vanishes, Xue Haoyu begins to experience strange auditory hallucinations. He keeps hearing the steady breathing of someone who seems to be asleep, and he thinks he’s the only one who can hear it. Yet whenever one bizarre incident after another takes place, that strange breathing returns. Then one day, he discovers that everything is connected to Shang Gong Xiaoyu. But he has no idea where she has gone, so he begins a frantic, desperate search.
