A woman is torn from her baby, accused of crimes she didn't commit and imprisoned in Iran. In London, her husband refuses to stay silent. So begins a campaign to free her.

Locked in solitary after her transfer to Evin Prison, a hopeless Nazanin takes drastic action. In London, Richard uncovers the reason for his wife's abduction.

Nazanin's solitary ends, and she finds solace among fellow inmates. In London, a careless comment from an MP risks derailing her case. Richard and Nazanin make an agonising family decision.

Nazanin, still imprisoned, is heartbroken when her daughter returns to the UK. Richard must learn to be a dad again and decides to go on hunger strike to get his wife home.