Drastic changes await the women at Wentworth Prison as the hit Australian drama returns. Bea (Danielle Cormack) languishes in solitary, plotting revenge for her daughter's murder, while Franky (Nicole da Silva) runs the prison unopposed. But the arrival of sadistic new warden Joan Ferguson (Pamela Rabe) threatens Franky's top-dog status.
Hoping to restore order at the prison, strict new governor Joan Ferguson focuses on austerity at Wentworth. Franky feels the pressure after her contraband operation is dismantled.
Bea agrees to sign divorce papers if Harry will kill Jac's son Brayden. Ferguson grants Doreen a greenhouse in exchange for keeping an eye on Bea. H2-block gets another inmate.
Simmo's return to Wentworth causes problems for Franky's drug operation, but Bea sees an opportunity to get to Brayden. Graffiti in the yard angers Ferguson and threatens Doreen's garden project.
Franky's new source comes through and drugs flow into Wentworth again. After forming a truce, Simmo warns Bea of the Holt family's plan for revenge. Bea grows suspicious of the new group of inmates.
Fletch and Will are still on bad terms, despite Vera's efforts to mediate. During visits, Simmo worries that her daughter is becoming indebted to the Holt family and Boomer gets bad news.
After a nearly tragic incident, Ferguson doubles down on her efforts to stop the drug trafficking and pressures Liz to tell her what she knows. Simmo wrestles with the task Vinnie gave her.
Ferguson has the garden project torn down, and Doreen blames Franky. Vera grows suspicious of Fletch, who has been acting strangely, and Doreen receives unexpected news.
As Franky obsesses over identifying the informant in her ranks, Ferguson asks Bea to stand against Franky. Liz anxiously prepares for her parole, and Doreen struggles to hide her pregnancy.
After Doreen's secret is discovered, Ferguson tries to use the news to her advantage. Will faces accusations about his relationship with Bea. Now working with Ferguson, Bea moves back into H2-block.
Liz's release from prison is painful, but she finds life on the outside even more difficult, especially as Boomer plots revenge. Fletch gets a transfer notice, but a surprise visit from the GM shakes up Ferguson's hold on Wentworth.