Hopping Mad: Dennis is invited to a music recital by Margaret and his parents give him money to buy a gift for her along the way. He stops to see a magic show and his assistant sells him his boss's magic hat. After Dennis shows Margaret her gift, it leads to havoc, when rabbits, pigeons, and frogs run rampant all over the house. Luckily, the magician arrives and puts all the animals back into his hat and provides Dennis with a real gift for Margaret in the form of a bouquet of flowers. She reciprocates by throwing a chocolate cake in his face!
Mayan Mayhem: Dennis and Mr. Wilson get onto the wrong plane from their families' intended vacation, ending up in the Yucatán, in Mexico, when they're forced to bail out due to excess weight. They encounter the primitive natives who believe George is a sun god and want to subject him to their rigorous tests. Dennis and George are able to escape and struggle to survive in the jungle. They make it to the local airport and get on another plane, but George's dreams of a tropical vacation are thwarted again when he realizes the flight is going to Alaska!
The Big Power Trip: Dennis and his father are on a tour of an electric plant when Ruff is spooked by the turbines and runs off. When Dennis tries to get his dog under control, they run onto the various electric plant controls, causing various power problems affecting the entire city.
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