Bunny receives a ring from her fan club in her home town. In the ring she sees the faces of people from her hometown telling her she's needed there. She arrives in Howardville on the day of the annual Founder's Day picnic and tries to get the chairman of the picnic to postpone it a day, but he refuses. Will she be able to help them when they need her most?

The dead planet is not uninhabited after all. The Doctor is about to meet what will become his greatest enemies. And he and his crew are dying of radiation sickness.