Mel comes down to breakfast in trousers and announces to the family that it's sexist to be made to wear uniform skirts. She goes to school and is immediately sent home. When Brian and Sophie go in to the school, the Headmaster thinks he has their support - until he notices that Brian is now wearing a skirt! Meanwhile, Lucy is looking after the school's pet hamster. This would be fine, but for the fact that Josh is looking for a money-making scheme and decides to film the hamster doing tricks for a TV show, Pets Go Potty. Only, this pet doesn't go potty - it goes missing. With disaster about to strike Josh gets Brian to morph into the hamster so no one will suspect. One good thing does come out of Josh's filming - Mel sees herself on tape and reveals the real reason for her skirt protest: she thought she had rotten legs. But now she sees them, she's actually rather pleased. She goes back to school in a very short mini skirt.