This study includes a study of the “Geser Myth” which is vital in the research of Buryat tribe’s origin, culture, and thoughts. The myths of ethnic minorities are generally nonliterary or lack adequate forms of literature and therefore exaggerated as ‘myths.’ This study attempts to investigate that aspect, with the assumption that the “Geser Myth” itself is also an overvalued ‘myth’ as well. Even though the “Geser Myth” has inadequacies as a literary genre and has many weaknesses, it still bears ‘mythical’ values. This is because of its content and productive aspects. First, in the “Geser Myth,” there is a godlike, divine being named Geser, which is the most fundamental element of a myth. In addition, the fact that the “Geser Myth,” is a root source of endless story reproduction points to its essentially mythical characteristics. Despite this, the “Geser Myth” cannot simply be defined as a ‘myth.’ The “Geser Myth” is a comprehensive compilation that includes the elements of oral tradition, epic story, natural environment related to human habitat, and the ethnic origin. Because it is in the ‘story’ format that captures the elements of oral tradition, epic story, natural environment related to human habitat, and the ethnic origin, it is a plethora of information. It is a space in which everything exists and harmonizes together, a place where stories become legends and heroes are born, all in the process of becoming a myth. Therefore, to the Buryat tribe, it goes beyond being just a myth but an ontological philosophy.