In the colonial New Spain Ana is a missionary who decides to support the indigenous people.

After a strict upbringing and the death of his beloved sister, Aro Tolbukhin leaves Hungary for Guatemala. Taken in as a political refugee at a mission, Aro grows close to Sister Carmen and becomes part of the community, but a series of misfortunes drive him to arson and murder. Now on death row, Aro is interviewed about his life and motivations by a film crew trying to understand what made him snap.