Mabel Muttley, the 109 year old primary school pupil . . .
Mabel loves football and plays every break time and after school most afternoons. But one day she hears that the dastardly Councillor Cedric Scrimshanks is selling the school football pitch to a building developer - and just because his son Sidney Scrimshanks doesn't like football. It is up to Mabel to outwit the mean plan and make sure that the football pitch is there for all pupils at Old Butttspry Primary School to enjoy.