Welcome to Emerald City, an experimental unit of the Oswald Maximum Security Prison or "Oz.". Once inside, choose your friends carefully. Every group - Muslims, Latinos, Italians, Aryans - stick close to mutual friends and terrorize mutual enemies. Don't smile. Get yourself a weapon, and if you can find someone's good side…stay on it. Brutal, disturbing and utterly gripping, Oz is an extraordinarily accomplished TV drama, a razor sharp morality tale populated by characters who no longer have any.