Peter "Mad Max" Maxwell, the "dinosaur" Head of Sixth Form, doesn't see the need to know how to send a text or an email. However, it soon becomes vital that he learns. Some of his female pupils begin to receive threatening messages. Then Max starts to receive messages too, and two of the girls go missing. When a body is found it seems that the prank has taken a sinister turn. And Mad Max may well be next. With his job under threat from the ambitious IT technician and the formidable Pansy Donaldson, and facing increasing pressure to retire, will Max manage to crack the case? Or is the chance of him reaching retirement looking more unlikely by the day?