Watch full movie online. Un Buda follows two brothers orphaned as children when their parents were taken by the military during the "Dirty Wars" of the 1970s in Argentina. Tomas is now a drifting and withdrawn young man who experiments with ascetic practices and has an instinctive compassion for others. His older brother Rafael is a university philosophy professor, detached and alone. Their struggles with each other and the world around them in Buenos Aires take a dramatic turn when they find themselves at a rural Zen center.