Scream of the Shalka 6.Bölüm Doctor Who - Anime

As they claimed to have done to billions of planets before, they intended to implant Shalka larvae into key segments of the population, mind controlling them into emitting a scream that would destroy the ozone layer. In this way, the Shalka intended to raise the surface temperature of the planet to the point where the human race would perish but the Shalka could thrive. The Shalka would then live beneath the surface, with the rest of the universe believing that Earth's inhabitants had died of self-inflicted ecological damage. The Doctor defeated their plans with the help of the British military and a Lannet barmaid named Alison.