A happy and determined nursing aid works hard for her future but ironically, has no memory of her past. All she can remember is that she’s left by a man in an orphanage and that this man asked her to not forget her name - Jane Yoon.

After finding clues that lead her to the man who left her, Jane is determined to find him believing that this man is her father.

As she finds her "father", Jane discovered that he already has a family and his eldest son was one of her former patients, Ryan Kim, a baseball player.

Jane decided to live under her father's place and she will face her two biggest battles: fight to know her real identity and fight to stop falling for the man she sees as "brother".

Kristoff Seo is the future heir of a sports clothing company and also the clean-up hitter for a professional baseball team who will also fall in love with Jane.