Retiring headmistress Mary decides to train her replacement Dulce in the most important aspect of the job... the discipline, and specifically how to give naughty girls a trashing punishment. They call in Head Girl Tefy to assist with the training... poor Tefy doesn't know that her role in the training is as the pie target and she takes the lot... not just pies, but chocolate and multiple slimes as well, and ends up stripped to naked too.