Se-yeon, yang selama ini terus mengabdi pada keluarganya sebagai seorang ibu dan istri, mendadak divonis mengidap sakit keras. Kini dengan tekad menjalani sisa hidupnya bagi diri sendiri, Se-yeon memulai perjalanan mencari sosok cinta pertamanya dari masa SMA. Meski tak senang dengan keputusan istrinya itu, Jin-bong, suami Se-yeon yang kaku, ikut menemaninya demi menghormati keinginan-keinginan tulus Se-yeon. Lewat perjalanan ini, Se-yeon dan Jin-bong diingatkan kembali pada momen-momen paling indah dan berkilau dalam kehidupan mereka berdua.

Se-yeon, who has devoted her entire life to her family as a mother and wife, suddenly learns she is gravely ill. Now determined to live for herself more than ever, Se-yeon leaves in search of her ‘first love’ from her high school. Though unhappy with his wife’s decision, Se-yeon’s stern husband, Jin-bong, goes along on her search to honor her earnest wishes. Through their journey together, Se-yeon and Jin-bong are reminded of the most glittering, beautiful moments of their lives.