Brian's mother dies and is surprised when he inherit's The Sanctuary, her controversial experimental treatment center for addictions. When he and his friends are shown around the dilapidated building by a mysterious employee, it is clear that there is a sinister mood. Despite this the group enters a secret underground passage and the terrible reality is revealed. Brian's mother had built a revolutionary machine that cured people of their addiction, but as a side effect to materialize the addictions in a mutated form of children who are addicted to human flesh which have moved into the building.

Set in Montreal during the disco phenomenon some 35 years ago, Funkytown follows the life of a group of colorful characters. We follow their lives and tribulations as everyone converges on a regular basis at Montreal's hot disco spot: Starlight. Along the way, several events take place that change these characters' lives. As these characters' lives unfold, the Parti Québécois takes power changing the cultural landscape in Quebec while the disco craze slowly fades. While we keep up with these various characters - it is Bastien who is a central part of this story. His drug addiction, dreams to become an actor and womanizing - make him the "bigger than life" typical 70s character around which the whole story revolves.