The Doctor escapes from the Scope and joins forces with Vorg to try and save its inhabitants but Kalik is still determined to use the Drashigs to start a rebellion.
Quest roles:
Ian Marter(Harry Sullivan), Peter Halliday(Pletrac), Michael Wisher(Ranjit (voice, uncredited)), Tenniel Evans(Major Daly), Jenny McCracken(Claire Daly), Leslie Dwyer(Vorg), Cheryl Hall(Shirna), Terence Lodge(Moss)