George's grandma is ill, so he and his parents are moved into her house to look after her. George is bored but then he discovers the Goffins - Lofty and Eave - two most unusual people who live secretly in grandma's attic. They have a strange way of procuring food! But as they show George more and more of their rooftop world, they teach him to be more confident and caring, which makes for a much happier family life.