喧哗熙攘的大都会闹市街头，夜幕降临，街头巷角人头攒动。汤姆和杰瑞这对冤家在人群中穿来穿去，展开新一轮的追逐战。他们躲过了飞驰而来的车轮和行人密密麻麻的脚步，杰瑞慌不择路，径直钻进附近的一个剧院。此时，剧院即将上演著名歌剧《卡门》，灯火辉煌的剧院门口，人们鱼贯而入，热闹非凡。汤姆随之追了进去，却被门口的工作人员扔了出来。如是三番，他总算伪装成拿着大提琴的音乐家混入剧场。汤姆蹑手蹑脚做到舞台中央的位置上，原来提琴盒子里是一只小巧的提琴，提琴里面放着录音带，可以顺利地“演奏”出卡门的旋律来。利用这个机会，汤姆对杰瑞展开追杀。而这对吵闹的冤家也让这场演出充满了混乱和不可预测性……

唐微微（李冰冰 饰），32岁，既是设计公司的白骨精，也是大龄剩女。她的闺蜜靳小令（薛佳凝 饰）在怀孕期间，热心为她网络征婚并安排了相亲。结果，唐微微装孕妇吓跑了大多数，只剩下一个杨年华（孙红雷 饰），两人由此相识。与此同时，唐微微所在公司接了美国的客户，见面时她发现客户代表竟是7年前抛弃自己的男友王洋（段奕宏 饰）。他们从18岁开始恋爱，青梅竹马度过7年，终因王洋为理想奔波而分手。如今，昔日恋人重逢，别有一番滋味在心头。此时，杨年华却开始了一波又一波的热情攻势，无论是嘘寒问暖还是炒菜做饭，都体贴入微。而王洋也不甘示弱，意图通过忆苦思甜昨日重现唤醒唐微微重回他怀抱。于是，情敌之战，一触即发……本片改编自作家陈彤的同名小说。

Aspiring to be admitted to a good university and to become a lawyer, Tasiro Yuusuke, a tenth-grader from Kyushu, enrols in a prestigious high school in Tokyo. Plans are made for him to live in his uncle's house, part of which is rented out while his uncle is abroad on business. A realtor's mistakes leaves Tasiro sharing the house with Kei Yamaba, the most beautiful girl in the school, who is also his classmate. There is the risk that their unexpected 'co-habitation' will be discovered by the school authorities. While he grows increasingly attracted to her, he is often irritated by her innocent and nonchalant attitude towards their predicament. They each develop other romantic attachments, but end up turning to each other.

柳承龙、吴娜拉、金熙元、成侑彬及以200：1竞争率获胜的武振成最终加盟电影《嘴巴不可以》，该片讲述陷入已经是第七年低迷期的畅销作家“贤”面前天才作家志愿生“柳振”出现之后发生的喜剧故事。