Tom Baker’s Fourth Doctor returns with a new companion to face the Sinestran race and a much bigger conspiracy to rule the galaxy.
Professor River Song meet a race known as the Discordia - time-travelling bandits with little regard to the laws of time. Looking like demons, they go around changing history to suit their needs and it seems as though River is the only one who notices. Things only get worse when one of them develops a crush on her.
When the remains of an unidentified infant are discovered, three women react strongly but their connection, and the mystery of the body will only be uncovered when a determined journalist decides to dig deeper.