When two belligerent 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.

Men behave in a beastly, chauvinistic manner at an office party, turning what should be a fun break from work into an exercise in bad taste.

A night worker at a mental institution finds his job beginning to change.