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 that 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! After another failed attempt to catch Dennis when he is causing trouble, Sergeant Slipper's job is on the line. Slipper's boss hires a super-efficient cop called Boot to replace him. No crime too small, Boot apprehends most of the residents of Beanotown for the most insignificant of actions and sets out to ban all modes of fun for everyone else. Dennis comes up with a plan, and teamed with Walter, he ensures that Slipper keeps his job and Beanotown returns to normal.