After being vilified across the internet as a college entrance exam cheater, Jiang Yan returns to the examination hall of ten years ago, his gaze cold as time flows backward with each turn of a page. He has seven days to retake the exam and rewrite his fate. But Lin Zhao, his former deskmate, Zhou Yansheng, the unhinged homeroom teacher, and Su Tang, the one manipulating public opinion, have all appeared in this replay destined to collapse. With the truth buried in the answers to every question, he no longer seeks to clear his name. He only wants everyone, including those silent victims, to hear the echo.
