features two sisters who run a guest house in an old convent. Both are middle aged, unmarried and repressed by religious faith. They are often revolted at the antics of the foreign tourists that stay in their house, and in attempting to throw one topless sunbather out of their establishment they accidentally kill her. They cover the death up when the girl's sister, Laura, arrives the next day, and soon another outrageous guest has pushed their buttons in the wrong way and the kitchen furnace is working overtime. Single mums and a snooping Laura may be next, and the authorities will only accept the truth once it stares them in the face.