In a rage, a teacher murders a girl. Her brother is bred, for one sole purpose: to avenge his sist

两名顶级杀手各为其主，双方进行了多次较量，但他们亲人的惨死使得他们开始冷静思考自己的未来，并最终两人成为惺惺相惜的好友，并联手对付那些凶残的敌人。