A sustainable world. That is the dream and mission of Jan Terlouw. In this documentary, the writer, politician, and scientist calls for action. 'It is actually so simple. In one hour, the sun radiates an amount of energy to the Earth that would be enough for humanity for a year. In a technical sense, harnessing solar energy is child's play,' says Jan Terlouw. The common thread of the documentary is *Natuurlijk*, the 2018 Book Week essay he wrote. The documentary offers an exclusive glimpse into Terlouw's life and features other sustainable pioneers, including neuropsychologist Margriet Sitskoorn, star chef Joris Bijdendijk, Joos Ockels (Wubbo's widow), and Plastic Soup Surfer Merijn Tinga.