Hempsters: Plant the Seed follows seven activists as they fight to legalize industrial hemp in the United States, which is used in over 30 countries and is widely known to have numerous environmental benefits such as: less reliance on oil, more efficient use of energy, forest conservation, soil redemption and landfill use reduction, just to name a few. Featured in the film is award-winning actor and well-known hemp and environmental activist, Woody Harrelson, who challenged Kentucky State law when he planted four feral hemp seeds in 1996. His subsequent trial and acquittal brought the issue to the forefront of mainstream media more than ten years ago, but the fight continues on. Also featured are: Willie Nelson, Ralph Nader and Merle Haggard. Hempsters is a thought-provoking and compelling documentary that will not only encourage all of US to take action, but move US one step closer towards a more sustainable planet.