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Wang Haochen, the second young man of the Wang family in Peiping, loves singing opera. This is something everyone in Peiping knows. Later, Wang Haochen followed the troupe to Tianjin. There, he met Lin Wanqiu, a simple and kind-hearted medical girl, and Qin Yu, his childhood best friend. The three of them formed a detective team to find out the truth behind the death of Qin Yu's brother Qin Wan, but as more and more clues became available, they discovered an even more terrifying truth. As the truth is revealed, the whole thing is as sad as a dream.