Wushu coach Nie Yi Yi slaves away at two jobs struggling to support her family, while dreaming about resurrecting her father’s martial arts academy. When Yi Yi rescues wealthy businessman, Ho Kwan from muggers, he offers her a job as his bodyguard, support her family and restore her father’s academy. Before long, kidnappers appear and despite Yi Yi’s efforts to protect Ho Kwan, he is abducted. However, he manages to slip her a box containing a key to a mainframe that controls online betting on fights to the death. Upon investigating, she learns that Ho Kwan was kidnapped by a ruthless gambling impresario, Sung. In order to reach Ho Kwan, Yi Yi will have to join the tournament and gamble with her life.