The Legend of 420 2017 Medicine The documentary explores the controversial use of marijuana and the evolution of mainstream society. From a dangerous narcotic, listed as a Schedule 1 Drug substance since the 1970s, to the rush to decriminalize it today. What has changed and why? What will the cannabis industry look like in five years? Will it retain its integrity as a homegrown industry or be co-opted by Big Business? Experts, growers, celebrities and politicians weigh in on the future of Cannabusiness.