Deep in the Brazilian Amazon, Jack joins indigenous Kayapo rangers patrolling the boundaries of their protected territory, which serves as a buffer zone for uncontacted tribes who still live in voluntary isolation from the modern world. As Jack participates in tracking illegal loggers and miners, he witnesses how traditional knowledge of the rainforest combines with modern technology to create an effective defense system against encroachment. Through conversations around campfires and during tense encounters with illegal operations, Jack explores how these indigenous guardians are fighting not just for the forest itself, but for the right of isolated peoples to maintain their traditional ways of life in one of Earth's last truly untouched regions.