The ever unreliable TARDIS dumps the travellers on the planet of "Telos" where they encounter an expedition of humans dynamiting the landscape looking for something. What? Well that's what the "Doctor" (Patrick Troughton) asks and he doesn't much like the answer. They are looking for the tomb of the long extinct "Cybermen". Almost immediately, they discover something abutting the hillside and after a shocking start find themselves inside a control room with some pretty menacing self-defence mechanisms. The leader of the explorers "Parry" (Aubrey Richards) is a little gung-ho and starts pressin...