Tired of the costs of Gnasher's destructive behaviour, Dennis' dad sends Gnasher away to a dog training school, but Dennis finds out there's a connection between the training school and a spate of burglaries in Beanotown.
After Dad takes away the controller for Dennis' remote control car, a crazy scientist provides him with a new controller only to find it works on more than just his toy car.
While Gnasher is suffering tooth ache, Dennis entertains him by telling him an alternate version of 'Jack And the Beanstalk' with many recognizable Beanotown faces
Dennis' parents and several towns folk attend a 'How To Understand Children' class in the hopes of learning to cope with Dennis' antics, but things don't go as expected.
