Episode 1

Yorkshire policeman Ron Craven sees his daughter Emma gunned down in front of him. His grief leads him to investigate and he learns of her activities as a radical environmental activist.

Episode 2

Craven's investigation leads him to Emma's boyfriend and to American CIA agent Darius Jedburgh as it becomes apparent that Emma's activities were far from innocent-- and known to the government.

Episode 3

The police close in on their prime suspect for Emma's murder but Craven, now aware of her activities, is convinced that his colleagues are on the wrong track.

Episode 4

Craven confronts Emma's killer but is shot. Suffering from an apparent breakdown, he becomes determined to gain access to Northmoor nuclear plant.

Episode 5

Craven and Jedburgh follow the GAIA's route into Northmoor nuclear plant, but others are determined to stop them.

Episode 6

Jedburgh heads to Scotland with the stolen plutonium while Craven awaits the inevitable end.