Since little Eun-Hee has been thirsty for her mother's love which seems to be pouring only on Keum-Hee, her elder sister. One day, a wealthy old man comes to them and says that he has come to find his blooded relation― a lost grand daughter. Eun-Hee could think she could understand the whole thing why there seemed to be a barrier between herself and the mother. But in fact, it is Keum-Hee's hand that her mother hands to the wealthy old man. Now Eun-Hee is all respectful to her mother who has loved the adopted daughter more than the blooded one.
The time passes and the mother is seriously ill. She has to earn the money to cure her mother but life does not seem so easy to her. She has to take care of the little kids, she is caught in the love triangle with Keum-Hee and her first love, and there's this strange man, In-Woo, who seems to have fallen for her. When she is about to scream out of desperation, her mother takes her hand and confesses that in fact it was Eun-Hee, the real grand daughter of the wealthy old man!
Now she has to run busy to save her mother and put her fate to the right place and find what is hers.