`This is the Gyre - the most hostile environment in the galaxy`. 250,000 years` worth of junk is floating in deep space, home to the shipwrecked Sittuun, the carnivorous Sollogs, and worst of all - the Humans. The Doctor and Amy arrive on this terrifying world in the middle of an all-out frontier war between Sittuun and Humans, and the countdown has already started. There`s a comet in the sky, and it`s on a collision course with the the Doctor is kidnapped, it`s up to Amy and `galaxy-famous swashbuckler` Dirk Slipstream to save the day. But who is Slipstream, exactly? And what is he really doing here? This is a thrilling, all new adventure featuring the Doctor and Amy, as played by Matt Smith and Karen Gillan in the spectacular hit series from BBC Television.