Prologue
The Tardis shot through the time vortex, purring happily. Inside the Doctor, hair spiked up in every direction, his pinstripe suit as smart as usual, flew round the console. He flipped switches and tweaked levers, not entirely knowing where he was heading. He had just lost Martha, through her own choice and then, when it looked like Astrid might fill her shoes she too was wrenched away from him. He wasn't happy and the Tardis could sense this. It was around this moment she decided to do something to cheer him up.