The story is about two pilgrims who meet a snake on their way to Lhasa, which caused their pilgrimage be given up halfway. One pilgrim is an ignorant man who knows nothing. The other is a meditator, and when he meditated on Bhairava to scare the snake away, the other pilgrim shouted out in terror, so that the meditating pilgrim was interrupted and misguided. The meditator then became a devil, and the other pilgrim went crazy.