The story of a man on a mission to save the planet and its oceans. The film follows professional radical ecologist, Captain Paul Watson, as he repeatedly flouts the law so that he may apprehend what he sees as the more serious lawbreakers: the illegal poachers of the world.

In 1971, a group of friends sail into a nuclear test zone, and their protest captures the world's imagination. Using never before seen archive that brings their extraordinary world to life, How To Change The World is the story of the pioneers who founded Greenpeace and defined the modern green movement.