The Doctor finds himself the manipulated for once when someone abducts his friends from throughout time and space, luring him to the one place he can never go.
The TARDIS is on a countdown to disaster when it crashes, and the Doctor has 30 minutes to find Clara and stop an explosion that will destroy his ship.
In 1983, the Doctor and Clara land on a Russian nuclear submarine trapped beneath the Arctic ice. An alien stalks the boat and threatens to drive the crew to the brink of madness.
The Doctor takes Clara to see the rings of the planet Akhaten and the Festival of Offerings. However, something stirs in a nearby pyramid and it demands a sacrificial offering,
The Doctor comes to modern-day Earth when Clara calls him through the TARDIS. They discover that someone--or something--is occupying the wi-fi networks of the world and harvesting human minds. Not because of hate or a desire for power, but because they care.
In New York, the Doctor, Amy, and Rory meet River, but the Weeping Angels threaten the city as time periods overlap and time runs out for two of the travelers.