Oliver wants to play with his mum, but she's too busy looking after his baby sister. She's always too busy! Then, in the attic, Oliver finds three strange creatures who call themselves tantrums. They tell him they can get him anything he wants. Sure enough, week after week, Oliver's tantrums work really hard and with amazing results. New toys, ice-cream and parties - Oliver has it all. But then his mum begins to fight back. Who will win?