Cookie has been the dinner lady at Greenfields School for as long as anyone can remember. She has stuffed generations of children with sizzling sausages and jam roly-poly. To the horror of the children, she is suddenly replaced by two ultra-modern-bang-up-to-date dinner operatives. Things will never be the same again. 'Jumbo Jets' is a series which combines lively stories and pictures, for young readers who have enjoyed 'Jets' and want a longer story.