This powerful drama depicts the trials and triumphs of prison inmates and officers in a notorious women's prison. It's a tense and sexually charged atmosphere, a hidden world where anything can happen. In this unusual community, warmth and humor are required in order to survive the system. In the second season, Nikki and Helen's relationship deepens as Helen resigns as wing governor and encourages Nikki to continue her education and appeal her sentence. Meanwhile, an abused, murderous inmate seduces the senior male officer -- but she has ulterior motives. And a group of prisonners runs an illicit phone sex operation.