Three years after Vilag was all but laid waste by the Killorans, the Doctor is back alongside a different companion. And a lot has changed. Now elected Principle Triumvir, head of a tripartite government, Rossiter is working to secure a peaceful future for the planet by researching the technology the Killorans left behind. But he has to contend with opposition from his daughter, Sofia, who heads a public campaign demanding the destruction of all alien artefacts.