Rose embarks on her first journey with the Doctor, who transports her 5 billion years into the future to witness a horrific event: the Earth’s destruction. They’re on an orbiting space platform with a group of invited guests who appear to jump from one horrific event to the next. There are also unwelcome guests in the form of spider-like mechanical robots that seem to proliferate at random and are clearly focused on wreaking havoc. The spiders quickly eliminate the Steward and seize control of the orbiting platform’s mainframe. It doesn’t take long for the Doctor to figure out which of the invited guests is responsible for everything.