单身女性花美丽(宋丹丹 饰)自强不息,不仅尽心抚养儿子高闯(王亮 饰)长大,还经营着一家生意兴隆的火锅店。唯一让她揪心的是,高闯的户口不在北京,对将来的高考影响不可估量。情急无奈,花姐恨不得赶紧找个有北京户口的男人结婚。在婚恋顾问刘琼斯(梁静 饰)的建议下,花姐决定不惜假结婚弄到户口。一波三折后,花姐邂逅了琼斯的哥哥刘得意(范明 饰)。得意没钱没房子,被老婆三振出局,连女儿的抚养权也无法留住。为了生意东山再起,得意选择和花姐结为夫妇。各自怀着不同目的的二人走到一起,期间不免经历各种波折和考验。 在此期间,他们的亲人、朋友也慢慢受到这段不平凡婚姻的影响……Ms. Hua, a hardworking migrant who runs a hot-pot restaurant in Beijing, wants to get a registered permanent residence of Beijing for her son. Otherwise, her son can't study in the local school. Marriage brokerage sets up a date for her and a fitness instructor Mr. Liu, a local single man who can help her with that. But he also needs Ms. Hua's help because he wants money to restart his business. Therefore, they start a contract marriage because they both need something from each other. The couple find out that according to the laws and regulations, Mr. Liu has to own a property in order to get a registered permanent residence of Beijing for Ms. Hua's son. After getting to know Mr. Liu, Ms. Hua transfers the ownership of her house to him. Mr. Liu starts his business again. Unfortunately, he is in debt that he decides to get a divorce with Ms. Hua to save her trouble. But Ms. Hua has made up her mind to help him go through difficulties. Later, Ms. Hua's son finds about everything and doesn't want his mom to sacrifice her happiness for him. So Hua and Liu get a divorce. On the day Mr. Liu gets the repayment from his business and gives it to Ms. Hua, they decide to restart a life together with no contract.