The book is an iconographic study of an unusual Tibetan Painting. As a work of art its quality is remarkable, and it is probably the only one of its kind in its frame and subject matter. The existence of other paintings that depict the same deities has not so far been attested. The painting belongs to the Bon religious tradition and is currently preserved in the Rubin Museum of Art (RMA) in New York, where it featured in an exhibition of Bon art that took place in 2007.