THE DOCTOR AND ROSE TYLER TAKE MICKEY SMITH on his first journey in the TARDIS. He’s delighted to learn that they’ve landed aboard a spaceship, which the Doctor identifies as dating from the fifty-first century but which is drifting, listlessly, through the Dagmar Cluster, some two and a half galaxies distant from Earth. The travellers realise that the ship is deserted and that considerable, albeit incomplete, repair work is underway, even though the warp engines are at full capacity and a tang of roasting meat hangs in the air.