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碧翠丝汉斯多佛是个寡妇，与两个女儿住在康州郊外的平房里。她总是成天读着报纸里的广告栏，对自己的未来充满模糊的希望，口里对政府与社会骂骂咧咧，而她无形中也将自己的疾世愤俗之心传给了她的大女儿鲁思。小女儿玛蒂达因为对家里环境充满失望而将注意力转移到学校的课业学习，因此备受母亲诟病。随着一系列小事件的接连发生，碧翠丝和她的两个女儿也陆续遭遇意想不到的变故……

David（古天乐 饰）、碧咸（苏志威 饰）、碧咸的妹妹阿Ann（杨恭如 饰）、泉（李灿森 饰）从小一起长大，四人宛如兄弟姐妹，David与阿Ann更是青梅竹马。一日，阿Ann在夜总会做陪酒女郎时被黑道社团洪乐社的老大胜（方中信 饰）看上，随后，Ann在酒吧为David庆祝生日时遇到了胜。David与胜争风吃醋发生了争执，打斗中胜错手误伤了泉，使其成了植物人，悲愤不已的David发誓要帮泉报仇。碧咸好赌欠下高利贷无法偿还，被色魔雄要挟用Ann来还债。胜得知后派手下与David、碧咸一起去找色魔雄谈判，岂料谈判破裂双方大打出手，心狠手辣的David奋勇杀出一条血路，斩杀了色魔雄。一时间David闻名江湖，随后加入了洪乐社。David表现出色，很快获得了胜的赏识，他认为为泉报仇的时机已经到了……

Chan-woo, who has been studying to become a police officer for 5 years, joins his friends for dinner to ask for the money to apply for his exam and ends up getting drunk. He completely blacks out and wakes up not remembering what happened in his next door neighbor's room. Not only that, he finds a bloody corpse in the middle of the room. He hurries back to his room and tries to report the incident but he had forgotten his phone in the other room. But the door is locked and he has to resort to using a rope to swing to the next door room outside the window. Once the phone is recovered, he cannot go back because of a group of cultists who are evangelizing the neighbors in the hallway. He knows it’s the last day to apply for his exam and gets antsy as time is running out.

北川市郊外的湖内突然出现了恐龙。于是奥特警备队将恐龙冷冻，请环境生态学的户根崎教授进行调查。在夜间恐龙突然消失。同时户根崎教授面前出现了一对神秘男女，自称是他们让恐龙复活的。他们发明了理想的未来城市「生态都市」。对地球环境恶化感到焦虑的户根崎教授为了实现理想而协力，不过这却是梅特龙星人的可怕陷阱。