海归秦奋(葛优 饰)的天才发明“分歧终端机”因能公平和平地解决人类分歧,被风投者以200万英镑高价买走。秦奋也开始踏上网上征婚的路途,一路笑话不断,不是重遇Gay友,就是遇到推销客,秦奋颇有点心灰意冷,以致遇到清冷女子梁笑笑(舒淇 饰)时便开门见山请求对方说明来意。这次更为棘手,笑笑爱上有妇之夫,陷于苦恋中不停挣扎,这次纯属听从家里人安排才出来与秦奋见上一面。不再打算再见的二人尽情地分享了生命中最隐秘的秘密。 然而不久,打算和旧爱分手的笑笑找到秦奋,说要嫁给他,但想与他先去北海道一趟。因她与旧爱的爱情是在那里开始的,如今想在那里结束。秦奋答应了。二人踏上北海道之旅,秦奋在北海道的老友对他们盛情招待,三人游遍北海道各处,秦奋知道自己得不到笑笑的心,却不知道笑笑心中抑郁难解的结正冲向海底的漩涡……Qin Fen, a funny, honest, single inventor, met a girl called Smiley, who was in agony of her boyfriend's betrayal. They traveled to Hokkaido, tried to help Smiley cure her pain in heart, and both of them gradually found their true love and life redemption during the journey.