John D. Liu spent decades filming eroded, treeless land before and after large-scale restoration efforts, and this film assembles that evidence from five continents. In China's Loess Plateau, footage shows what was once a dust-choked wasteland turned back into productive farmland through terracing and reforestation. The film then follows similar projects in Jordan, where permaculture designer Geoff Lawton's Greening the Desert site pushes vegetation into arid ground, along with efforts in Ethiopia, Rwanda, and Bolivia. Liu argues these are not isolated success stories but proof of a repeatable method: retain rainwater, rebuild soil, replant, and let an ecosystem's own biology do the rest of the work. Interviews with the people running these projects lay out both the ecological mechanics and the practical stakes for the communities living on the land, since restored ground means restored water tables, crops, and livelihoods. The film's case rests on side-by-side footage of the same landscapes years apart, treating that visual record as the argument itself.