The eldest sister Gu Simei was harassed and threatened by the mayor, and accidentally "smashed" the mayor to death with a vase. Unexpectedly, the murderer turned out to be someone else. On the day of sentencing, who will stand up and tell the truth? In order to avenge her classmates, the second sister Gu Silan encountered mistrust from her lover and was framed by evildoers. Where should she go? Can the younger sister Gu Siyu find her true love?