We travel to the 20th of June, 1964 to watch all 6 parts of the seventh serial of Doctor Who. William Hartnell as the Doctor and his companions end up on the planet of a telepathic species who are suffering a strange illness which started when the first human ship arrived there causing them to defend the planet by not allowing the next ship to leave and to try to crash it while freezing the crew. We watch as the Doctor discovers the cause of the illness while dealing with opposition from some inhabitants of the Sense-Sphere who don't trust outsiders.