Max and Giovanni meet Sid the Janitor in the cafeteria. Sid teaches them some cockney rhyming slang.
Jeremy comes in with a bag full of groceries for that evenings lesson and they walk to the oom together.
Jeremy wants the to identify the items he's holding up and then asks if everyone completed the homework that he gave them the night before.
When no one has completed it he tells them they'll have to finish it before he lets them go home.
Sid is locking up the school for the night thinking that everyone has gone home. He locks Jeremy's oom door and then goes to the pub for a drink.
When Jeremy realises they're all locked in and asks if anybody will miss them and come looking for them the says no. To pass the time he suggests that the students tell jokes, so Juan tells a joke in spanish, but no one understands it.
When Sid is leaving the pub, his friend Charlie sees the light on in the oom and everyone waving.
Sid has to get Miss Courtney out of bed to investigate.
After the students leave, Jeremy goes back for his groceries and he and Miss Courtney are locked in again.