《仙剑奇侠传》改编自PC游戏史上最为经典的游戏作品。
一心习武梦想名震江湖的李逍遥(胡歌 饰)，为求灵丹妙药救助忽患怪病相依为命的李大婶上了仙岛，在机缘巧合下结识神秘少女赵灵儿(刘亦菲 饰)。两人情投意合当日就成婚，并许诺永不相忘。遥带着金丹离岛救婶婶，却被骗服下“忘忧散”，把与灵儿的一切全部忘记！已身怀有孕的灵儿深受打击，又发现自己是“大地之母”女娲后人的真相，有着拯救苍生的使命只好忍痛放下私人感情！逍遥在行走江湖的途中结识了刘晋元及其外刚内柔的表妹妹林月如(安以轩 饰)，并渐渐和这个欢喜冤家产生了情愫。李逍遥的感情到底何去何从？作为女娲后人的赵灵儿又背负着怎样的命运？一路上的诡异事件又预示着如何饿结局？

Li Xiaoyao journeys to Dream Island to find a cure for his sick aunt, where he falls in love with Zhao Ling’er and marries her. After losing his memory in an attack, he forgets Ling’er and returns home with her. As she tries to win back his love, Xiaoyao embarks on a quest to find her when she mysteriously disappears, uncovering hidden secrets along the way.