Chessie brought an outsider to her Head teacher, Mr Stamp. the girl was Rosie Ann, from the all girls school nearby. he wasn't impressed with how Chessie had so gleefully presented Rosie to him so he decided to punish them both as an example. First he caned Chessie in front of Rosie... then told Rosie she'd get the same but far more severely for daring to trespass on his school grounds!