20 years ago Zhang Xiu Ying's father was murdered by a very rich and influential family. She enters an Academy where her father schooled before becoming the best known assassin and spy aiming to seek revenge after being persuaded not to , she goes on with her plan to kill the man who killed her father. In the process, Xue Ying a mafia boss whom she ends up working for and falls in love blocks her path and becomes her greatest obstacle yet. Follow Xiu Ying as she uncovers the dark truth....