In a fable found in many cultures around the world, a hummingbird puts out a forest fire, one drop at a time, and "does the best she can," no matter how hard it is. For years, this fable has also served as a metaphor for climate justice activism, because climate activists, like the hummingbird, are doing the best they can tackle seemingly unstoppable climate crises in their communities and their countries. In this documentary series, we aim to tell their stories.