嫂嫂19岁

少女韩有敏（郑多彬 饰）性格开朗泼辣，甚至显得有点儿野蛮。有敏在年幼时本有着幸福的童年，父亲郑俊锡（洪耀燮 饰）是建筑公司大财团老板的儿子。然而一场车祸夺去了俊锡的全部记忆。一直不赞成这段婚姻的爷爷，更趁机对两母女谎称俊锡已决定回家继承家业，并要求母女俩与俊锡断绝关系。不堪打击的母亲一病不起，不久病逝。与她们同住的宋女士和金女士为了贪图爷爷留给母女俩的钱财，竟狠心地将四岁的有敏扔在火车上。有敏被渔民夫妇收养，然而养父母也都离她而去，只留下患有严重肾病的弟弟韩江彪（徐正民 饰）。面对高额的治疗费用，19岁的有敏独自肩负起了这份重担。在陪弟弟去医院洗肾的时候，情窦初开的有敏爱上了性格沉稳的主治医生姜民载（金载沅 饰），并阴差阳错地成了他的契约未婚妻。与此同时，民载的弟弟姜承载（尹继尚 饰）竟也渐渐地爱上了这位未来嫂嫂。This series is about a 19-year-old girl, Yoo Min, who was being abandoned after the death of her mother. She lives alone with her adopted brother, Kang Pyo. She accidentally meets Seung Jae, the younger brother of Min Jae. By chance, Yoo Min actually had a crush with Min Jae, a doctor who treats her brother illness for a long time. To fight off his mother demand, Min Jae gets in an engagement contract with Yoo Min and they all end up living at Min Jae's house. Unexpectedly, Yoo Min and Seung Jae are going to the same high school. From there, Seung Jae secretly loves Yoo Min. On the other hand, Yoo Min's father who got amnesia from a car accident is looking for her again when 15 years ago, she had been abandoned by two women who worked at the restaurant. The conflict comes when the people who are living in Min Jae's house are actually related to Yoo Min's abandonment. They are the ones who stole the inheritance and abandoned her when she was four year old.