Terror of the Autons - Episode Four
The Doctor shouts and the Brigadier comes rushing back into the lab and saves him from the constricting phone wire.
Someone spots the van full of men in weird masks. The Brigadier goes after them with Captain Yates. The plan is to have the RAF blow up the van with a missile after it stops in a quarry.
The Doctor and Jo stay behind. The Doctor studies the plastic daffodil. He tries to figure out what it does. It turns out that it is activated by radio waves. Jo almost gets killed by the daffodil.
The Master shows up at UNIT HQ and insists that the Doctor and Jo come with him. The three of them go to the quarry. The Brigadier is forced to call off the missile strike on the van. The Autons tie up the Doctor and Jo.