A new, important, prisoner arrives at Wentworth, Sonia Stevens. She is married to a police, Eddie Stevens, and is sentenced for drug crimes. A new short time prisoner is prostitute Randi Goodlove. Hazel Kent shows up at Driscoll House again and acts strangely. Rosemary ends up in Wentworth after knocking down another inhabitant at the boarding house who made sexual advances towards her. Hazel reveals that she suffers from an incurable brain tumour. Sonia is harassed by the other women led by Bea, but she proves capable of fighting back. She also starts co-operating with Joan. Sonia's lover, Jerry Turner, is shot dead by police. The accusations against Rosemary are put down and she is released. Helen is transferred. Phyllis starts working for Sonia. Randi is released. Hazel wants help to die from Judy, who reluctantly agrees and does this. Joan manages to have Bea transferred to Barnhurst.
Sonia takes over as top dog after Bea. Cass Parker is transferred to Wentworth after having killed an officer at Barnhurst. Meg gets a shock when Marty introduces his new girlfriend, Randi Goodlove, who now appears under the name Jenni Gleason. Judy is arrested for murder on Hazel and is taken to Wentworth. Alice Dodds is appointed new manager at Driscoll House during Judy's absence. Meg is helped by Scott with a plan that leads to exposing Randi as a prostitute to Marty and their relation is finished. Petra and Scott are married in the prison garden. Lizzie is visited by her son Arthur Charlton.
Two new remand prisoners, Minnie Donovan and the young Bobbie Mitchell, arrive to Wentworth. Minnie, supported by Judy and Cass, takes over as top dog from Sonia. Petra is released. Sonia tries to get Joan's support by blackmailing her with tape recordings of their revealing conversations. These tapes will waltz around so much that you in the end almost don't know who has them. A new prisoner, falsifier Brenda Hewitt, arrives at Wentworth. She has contacts with gangster boss Lionel Fellowes and starts co-operating with Sonia. Arthur Richards is dismissed and for a while the Minister himself, Charles Harnsworth, runs things pending a new Head of the Department. A new prison officer, David Bridges, starts working at Wentworth and to begin with makes a good impression. Prisoner Mary Adler disappears from the prison without leaving any tracks.
Joan is offered to buy the secret tapes by blackmailer Don Baxter. Lionel Fellowes' henchman, Ray Foster, places pornographic material with Paul Reynolds who is arrested by police. Paul is defended by lawyer Samantha Russel. Randi Goodlove starts serving another short time at Wentworth. Minnie and the women plan to get back at Joan, but a group under Phyllis' lead take it into their own hands. They attack Joan and try to hang her. In the last second David shows up and saves Joan. Another prisoner, Tracy Dixon, disappears without leaving any track. Fellowes and Foster have Don Baxter killed. They also kill Joan's dog as a warning to her. Wally has a short romance with Samantha Russel, something which makes Ann furious. A new prisoner, the blind Belinda Johns, arrives at Wentworth. David offers to help Randi away from the prison and she becomes the third prisoner to disappear. At the end of episode 414 we watch her lifeless body lying in the boiler room.
Samantha manages to get Paul acquitted. Joan enters into a deal about truce with Lionel Fellowes. Bobbie escapes in connection with her trial, but she is soon arrested again. Brenda is transferred to another prison. A number of the women are questioned by the release board, which is presided over by tough judge Sarah Higgins. While Lizzie is waiting for the result she discovers two dead bodies in the garden. David shows up and tells that they are Mary Adler and Tracy Dixon which he has murdered. Now he tries to kill Lizzie as well, but Cass intervenes and kills David with a spade. Lizzie ends up in hospital and is informed about her release. Ann goes through surgery for breast cancer and is on sick-leave for a while. Colleen is appointed Acting Governor with Meg as Deputy. Scott quits as prison doctor. Joan and Sonia renew their alliance and launch an offensive against their enemies. Minnie gets sick after someone puts poison in her food. The women organize a roof protest against Joan. Helen is once again moved back to Wentworth. Joan succeeds in replacing Meg as Acting Deputy.
Pixie gets work release in a shop owned by Mr Schumann. Ann and Wally reconcile. Sonia is stabbed in the back with a piece of glass. Colleen suspects Joan of poisoning Minnie. On her way home, Colleen runs over and kills a drunken man. Joan witnesses the event. Minnie appoints Judy as her successor as top dog. Pixie meets a nice man at the bus back to Wentworth, soon after he shows to be a new prison officer, Rick Manning. Joan wants to negotiate with Colleen, she offers not to witness about the car accident in exchange for leaving the poison affair. Colleen refuses and intends to report herself to the police, but Joan comes first. Colleen is forced to take leave of absence and Joan is appointed Acting Governor. Judy finds out that Belinda is behind the attacks on Sonia. A new prisoner, Reb Kean, who is sentenced for robbery, arrives to Wentworth. Paul is shot by Fellowes' gang, but survives.
Joan introduces harsher rules at Wentworth and the women respond with different protest actions. Belinda tells Helen that Sonia and Jerry Turner caused her blindness. A representative from the Department comes to investigate the situation at Wentworth, it is Erica Davidson. Joan guides her father in the prison, but is humiliated when the women refus to obey her. A little later, Major Ferguson is kidnapped by Gary Wilder and Kevin Stansfield, Reb's accomplices. They demand that Joan lets Reb escape. Belinda makes an attempt to strangle Sonia, but is stopped by the other women. A new, elderly, prison officer, Stanley Dobson, starts working at Wentworth. Joan intends to let Reb escape, but the women find out the plan and take in their turn Reb as hostage to put pressure on Joan to resign. Joan resigns and Colleen, who has been cleared for the car accident, is reinstated as Acting Governor. Gary and Kevin manage to get Reb out of prison and they also take Joan as hostage. However, the Major manages to escape, while Joan gets her hands on a gun and shoots Gary to death. Reb and Kevin manag to escape, but Reb is arrested shortly afterwards and returned to Wentworth.
The confused Pixie is cheated out from prison by one of her ex-husbands, Ralph Cranton. Belinda makes more failed attempts to murder Sonia, but when she gets her best chance she shows to not have the will to really go through with it. Mo Maguire arrives as remand prisoner to Wentworth, suspected of burglary. Belinda is transferred to another block. Stan, who has heart failure, becomes good friend with Bobbie and Cass. Erica is appointed new Head of the Department. Ann returns as Governor after her sick-leave. Two new short time prisoners arrive to Wentworth, celebrity journalist Camilla Wells and drug criminal Meryl King. Stan organizes a singing group among the women and they prepare to take part in a contest outside prison.
Myra Desmond takes over as manager at Driscoll House, in spite of the problems she has with her own family. Her husband, Bill Desmond, has a mistress, Gloria Payne, and she also worries for her children, Alan Desmond and Kay Desmond. Meryl reveals to Sonia that Eddie is a corrupt police, as well as detectives Les Birmingham and Fred Mears. Sonia passes on this information to Rick, who is a former police and colleague of these. Rick can't believe this about his old friend Eddie, so he spies on him and is knocked down by Fellowes' gang and almost killed but Eddie saves him. Eddie asks Rick not to interfer, but Rick is anxious because corrupt polices might be involved in the death of his fiancée. The real perpetrator of Mo's alleged burglary is arrested, but she is kept in prison because of disciplinary offences. Camilla Wells, who has been released, makes a big thing out of this and the authorities have to release Mo at the end. Rick reports Eddie's doings to Inspector Maynard, but he also seems to be involved and doesn't do anything about it. During a family row, Myra knocks down Bill with a bottle and he dies.
Myra is placed at Wentworth pending her trial. Reb, seemingly regretful, is allowed to take part in the singing group. The released Meryl is murdered by some gangsters. In connection to work in the garden a snake comes into the prison. It stays the night in Sonia's cell. The next day it moves to another cell. Helen and Meg are bitten, but quickly comes under treatment. Stan kills the snake, it was his last working day before retirement. Bobbie puts the dead snake in Sonia's cell and she is terrified. Colleen's family borrow Rick's car, under which a bomb has been placed, and the explosion kills Patrick, Jennifer and Robert.
The singing group are travelling to the contest in a minibus. Kevin Stansfield kidnaps the driver's daughter, Cheryl, to force him to stop the bus during the travel. Meg, Joyce Barry and Andrea Radcliffe are accompanying as guards and the group consist of Judy, Cass, Minnie, Bobbie, Reb och Phyllis. Reb doesn't succeed in escaping on the journey away, but on the way home she manages to put sleeping pills in the officers' coffee. When they fall asleep, Reb escapes and is picked up by Kevin. Phyllis, who had been promised to come with Reb, instead takes Cheryl as hostage. Judy and Cass go along to protect Cheryl. Minnie and Bobbie go in another direction and have a nice day in freedom before giving themselves up. Reb knocks Kevin down and continues the escape on her own, home to her friend Sarah Webster with whom she also has hidden the money from the robbery. Judy and Cass manage to overpower Phyllis and they are all returned to Wentworth. Kevin finds Reb's hideout and in the turmoil that follows he is stabbed to death. Reb and Sarah are arrested and taken to Wentworth.
Doreen lets herself be arrested for a minor offence and is as planned taken to Wentworth to get away from a stubborn admirer. Minnie is moved to another block. Sonia is told that Eddie has been killed in a mysterious car accident. Eddie gets in touch with Rick, he is alive and has gone underground to nail Birmingham and Mears. Gloria Payne is arrested for possession of drugs and placed at Wentworth. The corrupt detectives smuggle cyanide into the prison for Sonia to use to kill Rick, but by mistake the prison cat is killed instead. Both Bobbie and Cass take a fancy to Rick and compete for him. Bobbie is rejected by him and as revenge she accuses him of attempted rape. Ann pressures Bobbie to admit the accusation was false. Sarah is acquitted and released. Helen is moved to another block. Sonia and Bobbie are being moved to Barnhurst in a police car. During the drive it shows to be false polices from Fellowes' gang which kidnap Sonia and Bobbie.
Margo Gaffney is moved back to Wentworth from Barnhurst. Pixie is arrested again and placed at Wentworth. Sonia and Bobbie are taken to Sydney. Judy lets Myra take over as top dog. Sonia and Bobbie are held captive by Fellowes' ally Kurt Renner and the purpose is to get Eddie. Renner wants to kill Bobbie, but Sonia protects her and instead lets her work as a prostitute. Myra has a tough time as top dog, with constant attacks from among others Joan, Margo, Phyllis and Gloria. Margo starts dealing drugs at Wentworth but comes into conflict with Reb who also wants to take part. Joan visits her father in Sydney. Meg starts to get memory lapses. Doreen is released. Joan finds Bobbie on the street in Sydney. Renner tricks Eddie into a trap and shoots him, but Eddie survives. Joan forces Bobbie to contact Sonia who runs away from Renner. Sonia meets Joan but runs away anew when the police show up. Bobbie is arrested and taken back to Wentworth. We watch Sonia one last time, standing beside her escape car above some rocks. Later the police find the car with bullet holes in it, but Sonia's fate remains an unsolved mystery.