In 2003, a 17-year-old girl named Huang Shu was murdered but the killing method was unknown. Ten years later, a similar case occured, but the prime suspect is already dead, and the case is thrown into a fog. Dust-covered sins were caught off guard and broke into the reality of life, revealing a youthful past buried deep among five boys and girls. The piles of incidents colluded with the complexity of human
