A love story that transcends three lifetimes—from a Tang Dynasty princess and a monk, to a tea seller and a silversmith, and finally to a modern-day temple abbot and a young historian. As fate intertwines their souls across time, they struggle to fulfill a love that is forever tested by duty, sacrifice, and spiritual awakening.

　　《法门寺猜想》讲了一对恋人的三世情缘。唐朝的元公主与法门寺的小和尚觉能相恋，后来觉能知道自己是被掉包的皇子，而公主是宰相的女儿。觉能后为保护佛骨自焚而亡。公主也自刎了。第二世是一个卖茶的缘妹和一个金银匠阜能的故事。两人相恋，但缘妹被外族拓跋氏看上，阜能为了国家，也为了缘妹，只得远征拓跋。第三世主持人元缘和年轻的历史学家小唐在挖掘法门寺时相识。小唐写了《法门寺猜想》的剧本给元缘，元缘后来才明白自己也许就是元公主和缘妹的前世今生，当他要去找小唐时，小唐已经出家，法名可能，远走。