Clara has it all under control: her life at school, her life in space; her new boyfriend and her mad old Time Lord. Everything is humming along just fine, so…

The Doctor takes Rose on her first voyage through time: to the year five billion, when the Sun is about to expand and swallow the Earth. She is cautious and…

Rose is taken home, but a spaceship crashes in the Thames and London is closed off… Enter the Slitheen!