The mysterious and taciturn transfer student Yunheng is drawn into the turbulent girl's scheming as soon as she arrives; Keqian, who wants to be re-elected as the campus goodwill ambassador, tries every means to establish her own sister power; the outspoken Lijia can't stand Keqian's methods of using both kindness and force, and while standing up, he is also caught in the vortex of struggle, and the sisters fight each other. After a birthday party, the girl's secretly filmed sex video circulated on the Internet, rumors spread, and the girl's gossip diary began to change. Live broadcasts, secretly filmed, and sex searches, the campus circle of boys and girls is no longer peaceful, and a storm of online social networks is about to hit! She is fighting for justice for her friends. As she gets closer to the truth, she also reveals the unsettling truth on campus...