A temporary teacher at an elementary school realizes that one of her students is being abused at home by her family. She makes an impulsive decision to kidnap the child and attempts to become her mother.

Su-ho and Hyeon-seo, who once dated for six years, meet again as a youthful rich CEO and a piano instructor. K works with Su-ho on a collaborative project and invites Hyeon-seo to join them. Su-ho and Hyeon-seo embark on a bumpy romantic journey full of twists and turns. Will history repeat itself?