悲伤逆流成河

多组校园欺凌事件，打破了5位主角本应该美好的青春校园生活。齐铭（赵英博 饰）清俊帅气，是人人称颂的优等生，而易遥（任敏 饰）却是大家口中的“赔钱货”。两人一同长大，感情很好。而这一切，在转学生唐小米（朱丹妮 饰）出现之后发生了翻天覆地的变化。流言成了毁人利器，处处对易瑶进行刁难，易遥的生活开始陷入黑暗，遭受各类残酷欺凌。顾森西（辛云来 饰）教会易瑶对校园暴力进行反击，他的出现给了易遥一丝曙光。可阴差阳错，顾森湘（章若楠 饰）的意外却将她再度推入黑暗。当受害者变成施暴者，当看客变成助推，在这一场名为“玩笑”的闹剧中，没有旁观者，只有施暴者……Yi Yao is a withdrawn high school girl living with an abusive mother, who runs a sensual massage parlor and is ashamed of her daughter. Qi Ming is Yi's childhood friend, who was brought up in poverty and the role model at school. Yi is bullied mercilessly at school by Tang Xiaomi and her friends. Her only friends are Gu Sunxi and his twin sister Sunxiang. Everyone's personal lives conflict and things only go from bad to worse.