My Fair Dennis: Dennis goes to Upper Crustville to visit his rich aunt Olivia and cousin Chauncey and causes disasters with everything he does while at their mansion. After a mishap with the lawn mower leaves the boys covered with mud, Olivia decides to send Dennis home. But it's Chauncey who gets on the train leaving Dennis behind, and Olivia and her butler run after the train to get away from him.
A Good Knight's Work: When he falls asleep while watching a medieval show on TV, Dennis dreams of being a knight in the period era. His adventure is to rescue the fair princess as he battles a one-eyed ogre and a fire-breathing dragon in the castle with Joey serving as his squire. Dennis' fantasy goes well until it turns out Margaret is the princess and tries to kiss him after the rescue. After he wakes up, Dennis tells his mother it was all a nightmare.
Life in the Fast Lane: PeeBee invents a remote control time tuner that works on people instead of the TV. He and Dennis try it out on the latter's parents, Mr. Wilson, and Margaret leading to funny results. Then in town, they're able to slow down a pair of bank robbers for the police to arrest. Afterward, they return to Mr. Wilson's house, and he's curious as to how the time tuner works. He allows the boys to zap him again so he can wallpaper the room again. However, it malfunctions, leaving the room a mess and all wrapped up in the wallpaper as the boys flee for their lives.