Doctor Who: Spearhead from Space (TV)

The newly-regenerated Doctor is exiled to modern-day Earth by the Time Lords, where he becomes attached to the British branch of UNIT as their scientific adviser, ostensibly taking orders from Brigadier Lethbridge-Stewart. Aided by Liz Shaw, the Doctor's first task is to investigate a shower of mysterious meteorites which landed in the countryside. The Time Lord discovers that these are no ordinary meteorites: in fact, the plastic-controlling Nestenes have landed, intending to use their automated servants, the Autons, to take over the Earth.