Physically and emotionally battered after the shocking events of , Glasgow gang leader Kerry Casey must pick herself up and get straight back into the fray. When London gangsters William 'Wolfie' Wolfe and his tough-talking daughter Hannah approach her with millions of pounds worth of stolen diamonds and offer her an alliance in return for helping to sell them, she jumps at the chance to have someone on her side for a change. But there were more than diamonds in the loot Wolfie stole, and its former owners will stop at nothing to get it back. Kerry and Hannah must stay one step ahead of their new enemies - while Kerry spots the opportunity to settle an old score of her own...