Twenty-Five Twenty-One

In 1998, Na Hee-do (Kim Tae-ri) is a member of the school fencing team at Seonjung Girls' High School, but due to the IMF crisis, the team is disbanded. To continue pursuing her passion, she transfers to Taeyang High School and later manages to become a member of the National Fencing Team. Baek Yi-jin's (Nam Joo-hyuk) family had gone from "riches to rags" and is separated due to the financial crisis. He is forced to take up several part-time jobs and later becomes a sports reporter. In present day, Kim Min-chae (Choi Myung-bin), Na Hee-do's daughter, quits ballet and "runs away" to her grandma's house. During her stay, she comes across her mother's diary, through which the story is then told.