唐末乱世，朱温残暴杀害唐昭宗李晔，血洗皇城，篡权夺位，灭唐称帝。随着大唐李氏一族共同消失的，还有官府神秘组织“不良人”，以及国库宝藏。江湖盛传，宝藏的秘密藏在龙泉剑中，得剑者得天下。但是，也惟有李氏龙脉，才能洞悉龙泉剑中关于宝藏的秘密。幸运逃过劫难的十皇子李星云，和青梅竹马的师妹陆林轩一直随师父阳叔子隐居，虽然如此，也无法扭转宿命。随着李星云师兄妹开始闯荡江湖，龙泉剑也已悄然现世。江湖三大势力玄冥教、幻音坊、通文馆早已各显神通，明争暗夺。一路江湖历练，李星云师兄妹和同样有着不明身世的通文馆少主张子凡结下不解之缘，再加上幻音坊侍女姬如雪，四个青春少年同群雄侠隐仗剑高歌，裹挟进历史漩涡。 At the end of the Tang dynasty times, Zhu Wen brutally murdered Tang Zhaozong Li Ye, to the Imperial City, usurp power, destroy the Tang emperor. With Datang Lee's family common disappeared, there were other mysterious organization "bad people", as well as the Treasury. The legend says, the secret of the treasure hidden in Longquan sword, the sword who in the world. However, only to see the Dragon Lee, a secret treasure sword in Longquan. Lucky survived ten Prince Li Xingyun, and the sister Lu Linxuan has been with her childhood sweetheart. Yang seclusion, though, is unable to reverse the fate. With the brother and sister Lee Nebula began to make a living away from home, Longquan sword has been quietly earthly. Jianghu three forces teach, voices, xuanming Fang Tong Wen Museum already Gexianshentong, dark Ming duo. A road arena experience, Lee also has a brother and sister nebula and unknown Life Instruments Museum Lord Zhang where the child became indissoluble bound, plus the voices Fang Ji maid as snow, four youth with all hidden sword singing, coerced into the whirlpool of history.