In 1974, a pair of pub bombings rocked Birmingham, England. The terrorist attacks killed dozens of innocent civilians, and wounded many more. But another tragedy took place in their aftermath: the wrongful conviction of six men for the crime. This docudrama follows researchers Chris Mullin (Sir John Hurt) and Ian McBride (Martin Shaw) as they investigate the case of the "Birmingham Six". As the pair uncover police misconduct, they embark on a search for the true perpetrators of the mass murders.