The attitude towards cannabis could hinder the success of legalization in Canada. Can we eliminate the black market and protect our youth? To do this, we must first deconstruct the discomfort that surrounds cannabis. This documentary tackles the myths and taboos that characterize this complex plant, and the stigma faced by its consumers. Therapeutic virtues and medical cannabis, black market and illegal dispensaries, prevention among young people, dependence and harm reduction: meetings with experts, users and stakeholders, from Canada but also from the Netherlands, Israel, Portugal and Colorado, allow us to better understand the highs and lows of cannabis legalization.