Herder Pagwa lives in a hut in a valley of beautiful flowers, where he hoards a mysterious chest whose secret is not revealed even to his three sons. The elder two believe that the chest is filled with gold and precious stones, so they break it open. From then on, water floods the valley, the earth withers and the people and animals start dying of thirst. The youngest son seeks out the wise Arat to ask for advice.
Batnasan, a biologist and scientist, continued his long-term academic work in life, and after coming to the Gobi region, in order to save it from desertification, he planted trees and planted fruits in the small settlements of Gobi, and began to implement the irrigation movement by building canals with the support of the head of the association, Donoy.
In this film based on the novel "Demise of Serui Dugan" by the folk writer Seng Erden, the sad story of how ancient Mongolian traditional rituals, religions and sum monasteries were destroyed by the black storm of repression in the 1930s is told in "Seruun" in Binder Sum, Khentii province. Dugan" is based on the tragic fate of the monastery.
