The article is dedicated to the analysis of the fairy-tale plot about a wonderful child in the form of a theriomorphic or phytomorphic creature in the folklore of the Viet, Hmong, Cham, Sedang, Stieng, Thai ethnic groups inhabiting the territory of modern Vietnam, as well as in folklore of other peoples of the Far East. Through the study, the methods of structural, typological and comparative analysis of plots, motives and heroes of folklore narratives are used. Hopefully, this approach will help to make assumptions about the ways of borrowing and transforming significant elements of fairy tales in the region. The article examines three Vietnamese fairy-tale texts – “Man Round as a Coconut”, “Magic Turtle” and “Little Turtle”, each of which is compared with both geographically close and distant versions of the narratives.