The story takes place in a Lisu Village near the Nu River,which in the border among Yun Nan, Tibet and Burma. Di ALu, in love with Mu Pa's sister Ji Ni, is banned from pursuing her by Lisu tradition. Mu Pa is arrested after cutting down a national protected plant. Mu Pa's father tries to marry Ji Ni to A Da to settle Mu Pa's case. Ji Ni, dressed in a traditional Lisu wedding outfit, disappears into a foggy mountain on her wedding day.