Xu Weilan, a 20-year-old sophomore girl, is an ordinary student in the Psychology Department of University A. Due to an "anonymous report letter" incident that caused a sensation on campus, she was involved in investigating the core circle of the school's elite society "Qingshe". The members of this club are all campus idols with prominent family backgrounds and talents. During the investigation, Wei Lan gradually got closer to the truth with her extraordinary insight, but unexpectedly discovered that all the clues pointed to the senior schoolmate Su Qing who committed mysterious suicide a year ago. And Su Qing is the founder of "Qingshe". As the investigation deepens, Weilan's own past - a gray memory of being bullied at school - gradually emerges. She must complete a difficult self-salvation while uncovering the mystery and helping others.
