1/7 UNIT is summoned to Wenley Moor research station which is experiencing power losses.
4/4 The Auton invasion begins as shop dummies come to life and attack the public.
3/4 Scobie visits Auto Plastics, unaware that he has played into the hands of Channing.
2/4 Channing directs one of his Autons to recover a meteorite that has been found by UNIT.
1/4 The TARDIS takes the newly regenerated Doctor to Earth to begin his exile.