Just Say No! traces America's growing drug use in the '80s and '90s: the loss of cocaine's "innocence," the Less Than Zero generation, the media firestorm over crack cocaine and how the hip-hop community dealt with it; celebrity rehab and the growing recovery movement; rave culture, ecstasy, and the reprise of '60s psychedelics; and America's ever escalating war on drugs. Finally, Episode 4 asks the hard questions: How did this happen? What have we learned? What should we do? What impact have drugs had on pop culture? On society? Is it even realistic to have a drug-free country?