- Finn wants to be cool. But what can he do about his wild, frizzy hair? The other children tease him and call him names. So Finn decides to do something drastic. He collects all his mum"s hair products and mixes them up into a potion. But the potion singes his hair and it all falls out! His dad takes him to the hairdresser to get a "No.1" haircut. The other children gasp when they see him - now he"s the coolest kid in school!