"Do you want to do it...?"The fatal seduction of...the "Challenge Game"Florist Ae-ran (Vicky) and forensics investigator Min-ho (Choi Ryeong) from the Public Prosecutor's Office both have a family that everyone wants. However, Min-ho can't handle bed time so Ae-ran starts a 'challenge game' in which she seduces and has sex with strange men. One day, Ae-ran and Min-ho meet Alex (Choi Hyeon-ho) at a tango cafe. Alex is interested in Ae-ran and approaches her while Ae-ran takes interest in Alex who is more handsome than her husband. Min-ho later witnesses them in action and gets angry when he finds out the man Ae-ran seduced is Alex. Min-ho feels nervous because he finds out Alex isn't just a game partner and approached him for a reason. Min-ho tries to get rid of Alex but Alex chokes Ae-ran and Min-ho even more and feels catharsis. The game they started is turning into a catastrophe...
找到相爱的人,便可以不再孤单。来北京掘金的港女李佩如(舒淇 饰)在光棍节的晚上,邂逅身为警察的方镇东(刘烨 饰)。李佩如顶着巨大的生活压力,希望用青春为家人换来衣食无忧的生活,被妻子抛弃的方镇东带着有人际交往障碍的弟弟方镇聪(田亮 饰)一起生活。也许是寂寞气质的吸引,抑或是命中注定,两人彼此吸引,日渐亲近。佩如生意起步需要投资,加之镇聪要结婚,方镇东毫不犹豫的卖掉自己的祖屋,可是佩如却由于生意不顺忽然失踪。此时镇东查出患有脑血管性失忆症,而且很快丢掉了工作,镇东一家的生活霎时陷入了窘境。回到香港的佩如发现自己始终不能忘记镇东,于是返回北京,在几经波折后找到镇东,却发现镇东此时身患重症。这一次,佩如没有退缩,她选择与自己的爱人相互陪伴……