电影主要讲述的是缉毒警察在卧底队员的配合下，里应外合彻底击败钉公贩毒组织的故事。
昔日双花红棍张家乐为社团平乱误致恋人Gigi身亡，入狱八年后金盆洗手，在石澳开酒吧结识洁荷；然江湖未息，坐馆荣哥遭义子火山暗算，仇杀与权斗再起，家乐在守护所爱与彻底抽身之间艰难抉择，最终引向宿命对决。
Kyohei Aizawa, an assassin for a covert non-governmental espionage group in Japan called "SEEK", is grieving over the loss of his girlfriend from a tragic plane accident. The leader of "SEEK",Ryo Mikumo, contacts him for an emergency mission; save a fellow agent, recover a new highly explosive liquid called "RDX@", stop a ruthless Yakuza leader, Sojiro Kotsuki, and his gang before they take over Japan. Although the Ninjas were thought to have disappeared... the new breed of assassins live on helping to protect Japan and all that is right; the Ninjas are coming soon.
影片讲述了天机门被悬刃卫以通敌叛国罪灭门后，气剑宗叶梵星受父命潜入悬刃卫查探真相，并与天机门唯一幸存者夏璃月相遇，二人共同揭露背后阴谋，诛杀叛徒并守护家国的故事。
大老板(陈龙饰)所困的不法山客栈迎来了一群不一般的客官，这其中，来势汹汹的西域人究竟是何身份?群妖汇集在此蠢蠢欲动又所图为何?而路经此地的唐僧师徒四人又将变幻何人才能骗过众人耳目?在这座无法使用法力的神秘客栈，一场惊心动魄的西游版“狼人杀”即将拉开序幕。
