珍园(高素荣 饰)有过一段非常晦暗的童年,因此格外渴望成为一名母亲来弥补自己童年时代缺失的母爱。然而,和石润(李成宰 饰)结婚很多年的珍园肚子却依旧没有任何动静,这让石润感到非常的心疼。终于,珍园怀孕了,这个意料之外的孩子带给了夫妻两人极大的喜悦和幸福,他们给这个孩子取名为润珍。 然而,就在孩子即将诞生之际,医生告诉珍园和石润,这个孩子患有一种非常罕见的疾病,只能够在世界上存活一天,但是这个只能活一天的孩子,却能够拯救其他很多孩子的性命。忍着绝望和悲痛,珍园选择生下润珍。College sweethearts Seok-yoon and Jin-won marry after graduation. Seok-yoon, gentle and cautious, lands a job designing children's toys. His wife Jin-won is physically very weak but strong-willed and the two love each other very much. Jin-won, who lost her parents when she was very young, want nothing more than to become a mother. However, despite their efforts they are unsuccessful. Jin-won's craving for a child becomes an obsession and Seok-yoon begins to lose his patience with his wife's extreme behavior. Finally, in what seems like a miracle, the two conceive a child. Their joy in life and love for each other grow along with the baby. But that miracle of happiness proves to be short lived....