This is the third and final story in a loosely overarching storyline. The first story, The Burning Prince featured the Fifth Doctor; the second, the Acheron Pulse features the Sixth Doctor, and this one features the Seventh Doctor. In all three stories the Doctor is without companions so the action is focused very much on the individual Doctors and their unique personalities.
By the end of the second story The Acheron Pulse the Sixth Doctor believes he has resolved the problem, moral, ethical and otherwise of the Wrath and leaves well pleased with his work. Some fifty years later the Seventh Doctor, as played by Sylvester McCoy is caught up in the long-simmering aftermath that still seems to plague the Drashani Empire.
This story is rather cleverly played out - the first cd (made up of two parts) I thought it was all a bit pat, as the Doctor seemed to know what was going on (even though we didn't), and I thought for a while it was going to be one of those `too clever for its own good' stories where it all falls into place too easily. But when you get to the second cd (third and fourth parts of the story) it all comes together for the listener and becomes a much more overall satisfying story, which is very cleverly and craftily put together.
I thoroughly enjoyed this story, and absolutely loved the three overarching stories in this storyline. The Wrath are a great creation, and in this third story they are utterly enthralling - I kept playing the scenes with them over and over just to hear their voices - brilliant. This story, and the three stories in the storyline are totally and utterly recommended. This is fantastic Doctor Who and should not be missed by any Doctor fan.