Animation. Dennis lives in Beanotown with Mum, Dad, little sister Bea and his pet dog Gnasher. Gnasher is more than a dog to Dennis, he is a kindred spirit. Whatever Dennis does, Gnasher does with him. Together with their friends Curly and Pie Face, Dennis and Gnasher believe the world truly is their oyster and that kids should make the rules. Not everyone agrees, including Mum and Dad, but Dennis and Gnasher are not going to let that stand in the way of their pursuit of fun! Dennis gets a bad case of the hiccups after opening one of Mr Har Har's can-o-giggles in the treehouse. Dennis's giggle-ups begin to have a negative impact on his lifestyle and with tickets to see the premiere of Krang Powerrup's new film and a chance to meet his hero, Dennis desperately tries to find a cure. Even Curly and Pie Face cannot seem to help. Just as all hope is lost, Gran comes up with the one thing that Dennis is frightened of most.