In a small Michigan town where the business of incarceration is the only thriving industry, the McClusky family are the power brokers between the police, criminals, inmates, prison guards and politicians in a city completely dependent on prisons and the prisoners they contain.
In season four, Mike's control over Kingstown is threatened as new players compete to fill the power vacuum left in the Russians' wake, compelling him to confront the resulting gang war and stop them from swallowing the town. Meanwhile, with those he loves in more danger than ever before, Mike must contend with a headstrong new Warden to protect his own while grappling with demons from his past.