Ep 3. Earthshock, Episode 2

The Doctor and his companions return to Earth in the 26th century, only to find themselves caught up in a plot by a team of time-traveling mercenaries who are intent on stealing Earth's most precious resource: its minerals. The group, known as the Cybermen, are hiding on a spaceship, which must be destroyed before they can escape with their stolen goods. The Doctor and his companions must work together to stop the Cybermen from destroying Earth, even as they face their own internal struggles and conflicts. As the situation becomes increasingly dire, the clock ticks down toward an explosive conclusion that will determine the fate of the planet. In this gripping episode, viewers will be introduced to the iconic villainous species of the Cybermen, and witness the adventures of the Fifth Doctor and his companions as they face one of their biggest challenges yet.