“出生于小廚房家三女兒”這就是她名字的來歷。29歲的“老處女”金三順（金善雅飾），既不漂亮，也不苗條，但是她性格頑強，做人堂堂正正，同時有著強烈的好奇心，遇到事情有一股不管水深火熱勇往直前的精神。　　為了考取糕點技術師資格証，三順日以繼夜地打工，並最終考取了該証。在巴黎傳統糕點學校學習期間，三順遇到了在漢城連想都想不到的帥哥閔賢宇（李奎翰飾），並開始了一場甜甜蜜蜜的戀愛。但這僅僅是好奇心惹的禍嗎？男的漸漸厭倦，突然對三順宣告分手。三順的開場白就是從跟蹤閔賢宇開始，與美麗的女人一起上酒店的男人，突然開啟的房門和尖叫的三順。　　失去男朋友、求職也失敗的三順失落的回到無業的生活，並偶然邂逅了27歲餐廳老板玄真賢（玄彬飾），開始了一場協議戀愛。雖然沒有清楚的理由，但正值錢荒期的三順就用借錢的條件接受了那協議。故事就這麼完了麼？不是，三順前男友閔賢宇的糾纏不清，玄真賢與舊情人俞熙真（鄭麗媛飾）難以割舍的五年戀情。身處複雜事件漩渦中的三順，能否成為所有這些事的解決者……？

The third off-spring of a family of cooks, this is the meaning of her name. A 29 year-old bachelor girl, unattractive, chubby and yet who did not have any talents to be proud of. In fact, there are more. Stubborn, open-minded, full of curiosity and has the confidence to carry her life. Sam-Soon possesses a license, which is rarely possessed by a more mortal, a license in baking, issued by a famous culinary school in Paris. She previously worked hard as a part-time in order to sit for the exam to obtain the license. It was not merely a license. She met and hit off with a good-looking guy whom she did not dare to fantasize about in Korea. The guy became bored with her and dumped her. Losing a boy-friend and failing in her jod interview, Sam-Soon became jobless. At the same time, Sam-Soon met up with another man became Sam-Son's employer and started to go after her. Unable to dofferentiate between consenting love and a contractual love, Sam-Soon bowed to the requests of the guy because she was in dire need of money. What actually happened? Will Sam-Soon be able to brave the adversities that occur one after another?