Naughty Belle is in detention again, and she's bored. She's stuck with all the food she smuggled in for a midnight feast, and decides she wants to do something very naughty and destroy her school uniform, especially as her teacher keeps saying how precious it is. So she sets about systematically destroying it, with ice cream sauce, and custard and trifle and porridge and cream... and oh, so much more, to destroy her school hat, blouse and skirt, and get her bare legs mucky too.