The Fourth Time Lord investigates a distress signal on Earth. He repairs the station, gets captured and freed, falls into a crevasse, removes a hallucinogenic device from Sarah, disables the Sontaran robot, duels Field Major Styre, and ultimately thwarts the invasion by sabotaging the alien ship.
Core companions who rely on each other for survival and mission success.
Fellow travelers who coordinate actions during the crisis.
Direct antagonists locked in a life-or-death struggle.
Former captor turned temporary ally after escaping hostile astronauts.
Unlikely allies united by a common enemy.
Explore the full interactive character relationship map of Doctor Who: The Sontaran Experiment