我朋友的老姐线在完整版26-year-old Yong-jun (Hong Kyung) is troubled by his lack of dreams when he falls for the same-age Yeo-reum (Roh Yoon-seo) at first sight. Yeo-reum takes care of her little sister Ga-eul (Kim Min-ju), a swimmer with hearing impairments, regarding her sister’s Olympic aspirations as her own dream. While youthful feelings seem to blossom between Yong-jun and Yeo-reum, she finds h...