Ten months after the riot, Em City re-opens. A recovered McManus creates a council of group representatives to keep order, and initiates GED classes to help inmates get high-school equivalency diplomas. Having been told by O'Reily that Adebisi was responsible for his father's passing, Peter Schibetta takes over the kitchen by cashing in a favor Glynn owes the family. As Schillinger's parole hearing nears, Beecher taunts his nemesis mercilessly in an attempt to ruin Schillinger's quest for freedom. Glynn's duaghter is raped by a group of Latinos, and the warden takes out his frustations on Alvarez. O'Reily learns he may have breast cancer.
OZ is set deep inside the Oswald Maximum Security Prison, in an experimental unit known as Emerald City. Em City focuses on prisoner rehabilitation over public retribution. There's one set of rules from the outside looking in, and another once you're inside. Every group - Muslims, Latinos, Italians, Aryans - stick close to their mutual friends and terrorizes their mutual enemies.