It's a new series and new aliens. This time with stupid shoulders and ridiculous dresses and find out what Quarks are. Other than subatomic particles that is.
When two rogue Dominators and their robotic servant Quarks land on the peaceful planet Dulkis, planning to drop a radioactive seed into the planet's core to refuel their spaceship, the Second Doctor, Jamie and Zoe must attempt to inspire the pacifist Dulcians to resist.
Written by Norman Ashby
Directed by Morris Barry