Classic Doctor Who: The Third Doctor

The TARDIS takes the newly regenerated Doctor to Earth to begin his exile.

Channing directs one of his Autons to recover a meteorite that has been found by UNIT.

The Auton invasion begins as shop dummies come to life and attack the public.

UNIT is summoned to Wenley Moor research station which is experiencing power losses.

Investigating the caves, the Doctor is attacked by a dinosaur-like creature.

The creature from the caves, wounded and dangerous, is on the loose on Wenley Moor.

The Doctor attempts to make peace between the humans and Silurians.

The Silurian's infect Major Baker with a virus and release him to spread the infection.

As the Silurian plague quickly spreads, the Doctor desperately searches for a cure.

The Silurians intend to destroy the Earth's protective Van Allen Belt, destroying mankind.

All contact has been lost with the Mars Probe 7 space mission.

Recovery 7 returns to Earth but the UNIT convoy transporting the capsule is ambushed.

The Doctor deduces that the occupants of Recovery 7 were not human.

Quinlan, the Doctor suspects, is part of the conspiracy, but Quinlan is killed.

The Doctor prepares to pilot the Recovery 7 ship into space.

The Earth's crust has been penetrated, releasing terrible forces from within.

The Doctor must return to his world to warn them of the danger. But time is running out.

UNIT are at a project run by Professor Stahlman who intends to penetrate Earth’s crust.

The green slime oozing from the drill head is transforming men into monsters.