 Natalie comes in late, to find everyone against her. Mr. Hankin s lesson about bubbles gives Jacko an idea to improve their window cleaning abilities - but Alice overhears and works out what the boys are up to. As Natalie tardily enters Mrs. Monroe s class which discusses groups, she finds a cloud of hostility raised against her. She protests innocence, but even Matthew won t talk to her. Mr. Hargreaves returns from his management course. Ted is round at Chrissy s, but they get on each other nerves. Ted tries to push forward the idea of a job he has lined up in Southampton, but Chrissy is not keen on the idea of moving. Mr. Hargreaves doesn t buy Jacko s gang s excuse for not wearing school uniform. At lunchtime, Justine and Liam are rescued from a nasty situation by the arrival of Ms. Janowitz. The teacher seems to have a natural rapport with Justine, and talks to her about American customs and the possibility of resurrecting a school newspaper. After lunch, Nat turns up, late again, and seems once again to be in a bad mood when she encounters Matthew. Maria and Fran bump into her, expecting an apology - but she makes things worse by insisting that they must also be slags to hang around with Chrissy - and she runs off. Avoiding Mr. Robson, as she rushes away, he is somewhat confused by her immediate arrival, sedately, through another door. Shortly after, Maria and Fran manhandle another version of Natalie through the doors, creating a loud disturbance. The set of twins stand side by side, while the reality of the situation sinks in to a stunned Maria, Fran, and Mr. Robson!