贝多芬（岑建勋 饰）和阿秋（吴耀汉 饰）是一对好朋友，也是搞笑鬼马的便衣搭档。他们常将警局闹得不可开交，连上司陈办（陈欣建 饰）也头疼不已。不过，自从阿秋和安娜（叶德娴 饰）结婚之后，贝多芬就变得孤苦伶仃，可怜兮兮。最终贝多芬搬到了阿秋家，和这对小夫妻凑成一个笑料百出的三人世界。陈办不堪其扰，将二人调到素有“鲨鱼田”之称的田警司（田俊 饰）麾下，两人被好好整了一番，苦不堪言。另一方面，陈办在执行任务时被多年前的宿敌飞天蠄蟧（林正英 饰）陷害。贝多芬和阿秋深知老上司被冤枉，于是明察暗访，发誓揪出幕后真凶……

A once promising baseball star is constantly hunted by two hitmen when a young boy asks him to sell his baseball jacket. A high school student acquires a sleep control device to help him with his exams, and ends up getting more acquainted with the seller in the process. A prison guard buys a guitar and plays one last song with a rock band after he finds out that his number has been called up… to be an executioner. An English tutor and amateur journalist investigating a murder case makes an offer to gain information on the involvement of … a once promising baseball star.GOOD DEAL is a woven tapestry of the interconnected lives of people striving through the day-to-day of contemporary Korean society. Quite a spectrum of themes are covered: romance, crime, sports, famly, work, and even Russian literature! As each of its characters seek to make a “deal” with another person to help them stay ahead or even stay alive, they find their interactions much more involved and complex than they first thought. Written and directed by Cho Kyuong-ho, the film mixes wickedly dark humor and sincere sentimentality through its interwoven yet still seamlessly linear style of storytelling.

一名曾经炙热的拳击选手（朴成雄饰），在比赛过程中导致对方死亡，在监狱服刑后想要诚实生活；而他的一位朋友（吴代焕饰）却在不择手段地想要获得成功。两个男人清算了过去，在过上新生活中，为选择不同道路而萌生了残酷阴谋，也导致了背叛。

在一座几乎被城市遗忘的古老公离里，十四岁的少女邵真（沈恩京 饰）消失了！在首尔上大学的姐姐喜真（南相美 饰）听到邵真消失的消息后马上回到家里。但是母亲却说只要终日虔诚祈祷邵真就会自己回来。喜真无奈之下只能报警，而警察泰焕（柳承龙 饰）也只是把案子作为普通的小孩离家出走案件进行了形式上的简单调查处理。不久之后，社区里一个女人正美跳楼自杀了，人们此时发现她在自杀之前还留给了邵真一封遗书，可离奇的是，遗书并不完整。后来又从小区的保安贵佳和邻居京子那里传出流言说邵真是一个鬼附身的孩子，这些事情让姐姐喜真和警察泰焕一时间不知所措。这之后人们发现，死了的正美原来和邵真喜真的母亲参加了同一个教会，而第二天保安贵佳居然也莫名其妙地被杀了。尽管这一切明显和自己参加的教会有关，母亲却还是一言不发只是继续祈祷。邵真的下落变得越来越无法捉摸，而喜真的梦里也开始出现死去人们的幻影……