"I have come to destroy you Doctor, once and for all..."

The Earth is in terrible danger! The Master has arrived with an evil scheme to destroy humanity and silence the Doctor forever. His plan? To awaken the awesome power of the Nestene - a ruthlessly aggressive alien life form. With their control over all types of plastic, they form into faceless automatons, a willing army of destruction easily controlled by the evil Time Lord himself. This is the terrible threat now facing Earth - the terror of the Autons.

Aided by the Brigadier and his enthusiastic new assistant, Jo Grant, only the Doctor can combat their evil power, but this is easier said than done when every plastic doll, phone flex, or chair can be turned against him. First, however, he must defeat the Master.