‘Se-yeon’, who has devoted her entire life to her family as a mother and wife, suddenly learns she is terminally 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.