Expert IRA bomb-maker turned police informant Andrea Hayes retires and starts a new life after four school-children are killed by one of her bombs. Ten years later, her blissful home life shattered when her daughter, Katie, is abducted from her bedroom in the dead of night. Andrea later discovers a ransom note, instructing her to leave her husband Martin and fly to London by herself. It also states that if the police are contacted, she and Martin will never see Katie again. In the hope of being reunited with Katie, Andrea obeys orders and follows instructions to meet with the kidnappers. Back in Dublin, Martin is powerless to help and becomes frantic with worry when he learns from Andrea that no ransom demand has been made, and that the kidnappers' request is something much more dangerous.