Documentarian Ben Kempas followed his subjects for two years to craft this thought-provoking film about the Klamath River and the ongoing battle over its use. The complex story involves the operators of the hydroelectric dams that are cutting off the water's flow; commercial fishermen who rely on the river for their livelihoods; and the leader of a Native American tribe that's based much of its culture on the salmon that used to thrive there.