Fenner and Karen foil the escape. Yvonne's lawyer advises her to plead guilty to Virginia's murder. The new governor arrives at Larkhall. Sylvia is put in charge of the G Wing tuck shop. Di takes a liking to the new PO.
Di and Barry announce their engagement. Karen is back in uniform following her demotion, and Fenner settles in his new role as her replacement wing governor. Shaz makes an allegation against Mr. Pearce.
Buki has stopped breathing following the escape tunnel cave-in, and Sylvia rushes to help. Fenner is jealous about Karen and Mark's fledgling relationship. Julie J. is reunited with her teenage daughter.
Fenner wisens up to Neil's intention and falls victim of harassment in the workplace. Tina and Noreen replace the Julie's in the kitchen and serve nothing but chaos. Karen and Mark grow close. Shaz and Denny go a step too far when they humiliate Buki.
Yvonne seeks retribution on behalf of Buki which drives a wedge between Shaz and Denny. Neil plays Di like a pawn to keep his secret covered up as Fenner begins to crumble. Roisin begins to take drugs. Maxi befriends an upset Shaz but has an alterior motive which spells danger for Yvonne.
Karen is left shaken by her ordeal. Crystal, upset with the living conditions on the mother and baby unit, plots an escape to free baby Zandra from Larkhall. Buki spends time with Baxter but their time together comes to an end.
The death of Baxter has an impact on the ladies of G-Wing. Sylvia becomes Acting Wing Governor which causes chaos when Karen refuses to step in. Maxi attempts to prove herself to the others which ends in disaster following a fight with Shaz.
Rhiannon feels remorse following her performance in court when Damian shows his true colours. Denny's joy is short lived when Bodybag finds Jessie. Di and Neil strike a deal to end their anguish. Mark is transferred. Crystal is released early to prevent any more trouble. Roisin falls back on to drugs.
Fenner falls victim to Neil at his stag night when it is just the two of them. Karen's returns to Larkhall as Wing Governor and reveals the truth to Yvonne about her relationship with Richie. Snowball gets Fenner on her side as she continues to manipulate everybody.
G-Wing hosts an open day for potential investors following the proposed privatisation of Larkhall. Denny awaits Shaz's inter prison visit. Snowball goes ahead with her escape plan which leaves several inmates in danger as they become trapped in the burning library.