Gemma's perfect life comes crashing down when her devoted husband is arrested for murder. As Gemma learns to navigate the prison system, she meets a group of women who will become increasingly important as she starts to think the unthinkable; could her husband be a murderer?

Francesca's life is thrown into turmoil when her assets are seized and the bailiffs take everything. Going from riches to rags, and with the arrival of a new man on the scene, how will Francesca cope? Meanwhile, Gemma promises to stand by her man, but how far will she go to help her murdering husband?

Harriet is devastated when she realises Gavin is the victim of prison bullying. But is she prepared to smuggle drugs into the prison to buy his protection? Meanwhile, Francesca faces homelessness, and Gemma is about to discover something that will change her life forever.

Lou's world starts to unravel as she faces the consequences of being a drug-dealing mother. Meanwhile, Gemma helps the police with the investigation against her husband, and Francesca attends a marriage guidance course in the prison.

As the case against her husband gathers momentum, Gemma continues to lead a double life; but how long before Steve gets suspicious? Meanwhile, Lou is desperate to be reunited with her son, and Francesca embarks on a risky plan to have illicit sex with her husband in the prison.

Heavily pregnant Gemma is whisked into witness protection, but when she goes into labour and Andy tracks her down, Gemma's life hangs in the balance. Meanwhile, Francesca is getting more involved in Paul's criminal dealings, Harriet is hoping to win the affections of the prison chaplain and Lou is counting down to her own imprisonment.