明明（周迅饰）是一个浪迹江湖的侠女，与阿D（吴彦祖饰）一见钟情。为了阿D口中的“有了五百万，就去哈尔滨一起生活”的诺言，冒险去抢黑社会头目猫哥（张信哲饰）的钱。 其实，阿D还有另外一个女友，名叫娜娜（周迅饰），拥有和明明一样的容貌，就连爱慕明明的青年阿土（杨佑宁饰）都将她们认错。 究竟哈尔滨埋藏着怎样的秘密，值得阿D一直追寻？ 明明从猫哥那里抢来的盒子，究竟又承载着怎样的秘密？明明和娜娜的爱情，又将走向何处呢？Ming Ming is a 21st Century martial arts princess and lady Robin Hood who steals for love. Her Prince Charming is D, a maverick fighter and irresistible rogue who posted this challenge to his swarms of female admirers - give him 5 million dollars and he'll run away with his benefactress to Harbin. Ming Ming meets D's another girlfriend Nana, who is a virtual look-alike of Ming Ming. Meanwhile, disappears from Shanghai without a trace. The only clue he leaves behind is a cryptic phone message.
