Parts: 1 (50-minute)
Writer: Chris Chibnall
Airdate: 08 September 2012
Production Code: n/a

Doctor: eleventh
Companions: Amy, Rory

Story: Having just rescued the ancient Egyptians from a weapon-bearing giant alien locust attack, the Doctor is immediately alerted to a crisis in the year 2367. As Queen Nefertiti appears to be getting attached to him, the Doctor brings her along for the ride. In 2367, they learn that a gigantic spaceship, the size of Canada, is rapidly approaching the Earth, but does not respond to communications. Unless the situation changes rapidly, the Indian Space Agency will have to blast it out of the sky.

Never one to leave an intriguing mystery unsolved, the Doctor decides to investigate the ship, in the hopes of averting its destruction. Feeling the need for extra help in the form of a gang, he and Nefertiti stop to collect John Riddell, an African explorer and big game hunter from 1902, and, of course, Amy and Rory... and, inadvertently, Rory's dad Brian. Arriving onboard the ship, the Doctor and his gang soon learn that it carries a precious cargo, long thought extinct: living dinosaurs.