Swordsman Huo Zhan Bai searches for medicine for a friend's child and meets pharmacist Xue Zi Yue. Over eight years, their daily interactions lead to a deep bond and a mutual promise to reunite under a plum tree the next year. However, their unspoken love and heavy responsibilities prevent them from being together, leaving a lasting regret. Amid snowy toasts and a thousand-mile farewell, their poignant love story becomes one of redemption and bittersweet letting go, marked by a missed opportunity that remains unforgettable. (Source: MyDramaList) ~~ Adapted from the novel "Seven Nights Snow" (七夜雪) by Cang Yue (沧月).