Having had his retirement snatched from him by malfunctioning technology, Peter 'Mad Max' Maxwell finds himself facing yet another new year at Leighford High School. After having her hopes of a dedicated house husband dashed, his wife, Jacquie, is further annoyed when a family holiday quickly becomes an impromptu Year Seven trip to the Isle of Wight, families welcome. Less than a week into their trip the situation takes another turn for the worse when the wife of Tom Medlicott, the new Head of Art, goes missing, forcing Jacquie to play the role of woman policeman.