Ka-kui Cheng Wu highlighted the danger of brothers in the Philippines against rebel guerrillas while separated . Ten years later, Ka-kui to be an excellent killer , he and partner Leah to Seoul to perform tasks , the goal is the largest local gang leaders Tsui brothers . Ka-kui tasks , recognizing the musician gold alternate Sentiment . Gold , a police detective boyfriend into force , it is the Ka-kui brothers separated more than a decade . Horse and the assassination of the Tsui brothers in Asia and the smooth process , but the key moment, the younger brother of Xu Yong went missing . Turned out that the assassination mission was actually an unexpected conspiracy ......