Seul-gi, who went missing as a child and grew up in an orphanage, transfers to Chaehwa Girls' High School in Seoul to find her father. Then, Jae-yi, the top student in the school and the object of everyone's admiration, approaches Seul-gi...

Jae-yi gives Seul-gi a new school uniform as a gift. Seul-gi, who had been wary of Jae-yi, finds out about Jae-yi's unexpected side and her heart is unlocked. She decides to go back to sitting next to Jae-yi.