Trees of Protest accompanies the climate movement in the German lignite area Hambach for more than two years. It tells the story of the bitter struggle of environmental activists for climate justice and against the mining of lignite by the energy company RWE. Nick Schader documents how the initially regional climate movement grew and gained international attention. The focus of the film are environmental activists who live in dizzying heights in Hambach Forest in tree houses. The clearance of the tree houses in autumn 2018 led to one of the largest police operations in the history of Germany.