The Master summons a time pigeon and goes back to Atlantis where he finds a minotaur and other plot points.
Posing as Professor Thascalos, The Master is using Cambridge University resources to summon the time-devouring titan, Kronos, and presumably take over the world.
He, Doc and Jo then travel back to Atlantis, after first playing about being inside each other, where the Master tries to organise a sexy coup. Surprisingly, he’s in over his head, though, and his new ally is not quite as controllable as he had anticipated. Also, there’s a minotaur.