All the students are brought to court for causing various acts of mischief at different places in London. Miss Courtney oversees the session as one of the magistrates, while Mr Brown acts as their barrister.

All the students return except for Ingrid and Zoltan, who has left for Hungary. Soon after, an affluent Arab Sheikh enrols his Scottish chauffeur in Mr Brown's class, due to not being able to understand his accent. But the Glaswegian man causes trouble due to his obnoxious, hostile and confrontational attitude.

Au pair Danielle brings her boss' baby to school, but she leaves him in the canteen and he goes missing.

Mr Brown takes Juan to hospital, suffering from a stomach ache, but a fall causes him to be admitted as a patient, instead.

Mr Brown receives an offer of a higher paid position at another school.

Anna's visa is about to expire so her friends suggest that she marry Mr Brown in order to become a British citizen.

The school holds a fete, and Max is responsible for hiring celebrity, Arthur Mullard, to open the events.

When Ali suspects that his wife is having an affair, Mr Brown takes matters into his own hands...