Three more episodes from the BBC's relaunched version of the television sci-fi classic, following the adventures of the Doctor (Christopher Eccleston) and his human assistant Rose (Billie Piper). In 'Aliens of London (Part I)', the Doctor returns Rose to her own time, mere hours after they left. But, when Rose finds that her mother (Camille Coduri) has been running a campaign to find her missing daughter and that her boyfriend Mickey (Noel Clarke) has been accused of her murder, the Doctor has to explain that the TARDIS has taken her back to a time twelve months after she left, rather than twelve hours. At the same time, an alien spacecraft has crash landed in the middle of the Thames and the Doctor makes his way to Downing Street to offer his help. But with the Prime Minister missing, who is really in charge of the country? In 'World War III (Part II)', the Doctor discovers that the sinister alien Slitheen have disguised themselves as high-ranking politicians and plan on starting a nuclear war so that, in the aftermath, they can sell off radioactive chunks of the Earth as fuel for alien spaceships. Trapped in Downing Street, the Doctor has to make a tough decision to stop them that could put Rose in danger. In 'Dalek', a distress beacon pulls the TARDIS off-course to the year 2012 and into a mysterious underground museum run by the American billionaire Henry van Statten (Corey Johnson). There the Doctor is shocked to discover the last surviving member of the evil Daleks, held prisoner by van Statten as a private exhibit. While the Doctor cautions van Statten to have the creature destroyed, Rose makes the mistake of trying to help it, and before long the Dalek is causing havoc on the base, killing everything in its path. With the help of van Statten's assistant Adam (Bruno Langley), can the Doctor stop the creature before it is too late? And if the Dalek is the ultimate killing-machine, why is it strangely reluctant to kill Rose?