Thirty years ago Libby Dai endured a terrible tragedy: killed her mother and two sisters at night, of crime it is found guilty her elder brother is Biao Dai whose guilt was not proved completely. Later time Libby Dai decides to resume investigation and to learn everything that occurred that fatal night. Whether she is ready to endure this nightmare again? What she is ready to go for the sake of the truth to? And what horrors keep in themselves these dark secrets?