Katô follows the Munduruku through their decades-long struggle for land and clean water, revealing a world where daily survival is an act of resistance. Refusing to wait for government recognition, the community has taken up the mantle of self-demarcation, putting their bodies on the line to map their own return. Supporting them is a women-led video collective that transforms cameras into visual arrows, documenting the destruction while affirming a vitality that cannot be extracted. By reclaiming the Katô—the ancestral Dark Earth—the Munduruku remind us that the soil is a living witness. Their fight for the land is not merely local; it is a desperate defense of the lungs of Mother Earth, upon which all life depends.