The film describes the events leading up to, and including, the massacre of the adults of a small town in Nebraska by their children, after the adults' irresponsi…

退隱江湖人物成哥, 不時勸兒子華仔切勿重踏自己舊路, 可惜華仔卻暗地裡與大傻勾結, 進行不法買賣. 國際刑警 Apple 奉命調查大傻所經營之財務公司, 萬 Sir 亦命與 Apple 共同追查. 追查當中 Apple 無意查出華仔身份, 以至被華仔設計殺害…