Quatermass is the director of an important scientific base, where he builds nuclear rockets for the colonization of the Moon. A strange fall of meteorites in a nearby village leads to the discovery of a huge base under a strict military control, officially a factory of artificial food. Quatermass reveals that the factory is actually breeding alien creatures.

A wounded criminal and his dying partner take refuge at a beachfront castle. The owners of the castle, a meek Englishman and his willful French wife, are initially the unwilling hosts to the criminals. Quickly, however, the relationships between the criminal, the wife, and the Englishman begin to shift in humorous and bizarre fashion.