A love story set in one of the most explosive political times in uk 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'. '.strtoupper('t')he group targets the black power desk, a true life counter intelligence unit within special branch dedicated to crushing all forms of black activism'. '.strtoupper('t')hough set against a backdrop of social upheaval and activism, the story focuses on the relationship between the two characters at its centre.