Han Xiao Chu is the top assassin at the Assassin Academy. Long Bi Xie likes her and follows her to complete her mission. When she wakes up, nobody remembers who Long Bi Xie is. But then Long Bi Xue shows up at the school as a brand new student. Han Xiao Chu and Long Bi Xie start working together to investigate. They find out everything they know to be true is actually a lie. (Source: MyDramaList)