The Dominators, Part One

The Doctor, Jamie and their newfound companion Zoe materialises on Dulkis in hopes of getting some much needed rest and relaxation. However, they soon find that they are not the only extraterrestrial visitors to this peaceful world. Rago and Toba, two invaders belonging to a race known as the Dominators, have recently arrived on Dulkis via spaceship and proceeded to enslave much of the Dulcian population.