Bruno loves pounding and punching. Jumping and thumping. Raging and roaring. Wallowing and wailing. Smacking and slurping. Pigging out and mucking about. ‘Don’t make such a racket!’ his dad cries. ‘Don’t be so disgusting!’ his mom cries. ‘Don’t make a mess!’ ‘You’re a monster!’ ‘I wish you were monsters too,’ Bruno says. ‘Then we could have fun together.’ Bruno magically turns his parents into monsters. But living with crazy monster parents isn’t nearly as nice as he thought it would be. They are too noisy and too messy. Will Bruno be able to change his monster parents back to normal?