All the officers are ordered to undergo drug tests as well as the prisoners, leaving Colin in a tight spot. The results of the drug tests concern Neil but not for the reason you'd expect! Natalie Buxton returns to G-Wing having been convicted of child prostitution, but has to cope with Frances, who is incensed at Natalie's return to Larkhall. Will Natalie be able to use her cunning and manipulative skills to win over the inmates?

Glamour hits Larkhall with the arrival of Tanya Turner, who has been jailed for possession of Class A drugs, and who quickly decides to cosy up to Darlene when she arrives. Neil is furious over the officers' drug tests, and Frances soon confronts Colin about them. Selena leaves for Canada to try and convince Milly to return and clear her sister's name. And a bout of sickness and vomiting hits the wing, with Al suffering very badly.

Jim receives a taste of his own medicine in a prison cell of his own... How will he get out of this situation!? On G-Wing, Governor Neil Grayling starts to make changes and announces that he will take full responsibility for the wing. Two newcomers arrive - Janine is furious with her partner-in-crime Arun for confessing to their credit card scam. Tina O'Kane hates her new freedom and tries her best to get back inside... but will she end up on G-wing or on another wing? Bev and Phyl plan to teach Bodybag a lesson. Top Dog Natalie Buxton is rubbing up her fellow inmates the wrong way.

Jim uses all his manipulative skills to get himself out of jail, but will Di realsie he is using her? Everyone on G-Wing is up in arms about the extortion racket Natalie Buxton and her sidekick Darlene Cake are running. Jim blackmails Neil Grayling into giving him the Wing Governor's job, and starts by sacking the two Julies from the kitchen. Phyl and Bev jump at the chance to replace them, but they're unprepared for all the hard work. Sylvia is sure that she has a mysterious illness - Dr Nicholson is unterested until a letter arrives for Sylvia...!