The Doctor discovers on the inhospitable and hostile terrain of Ollendorf 2 the remains of a Dalek and, in a cave, two human skeletons which have lain there for centuries. He wonders what brought the two men to this world. An account follows, told by space geologist Joel Kendon, describing the Halldon scientists' experiment. In it they transplanted primitive humans to the planet Ameron. The scientists artificially accelerated the humans evolution and in so doing created the Daleks.