A love story set in one of the most explosive political times in U.K. history, this 6-part series for Sky Atlantic tells the story of a 1970s London couple who liberates a political prisoner and forms a radical underground cell. The group targets the Black Power Desk, a true-life counter-intelligence unit within Special Branch dedicated to crushing all forms of black activism. Though set against a backdrop of social upheaval and activism, the story focuses on the relationship between the two characters at its centre.