1- Alice is away and Henry is embroiled in household chaos from breakfast "prepared" by Dennis through a sudsy laundry and a burning roast. After many visits, the fire department is relieved to know Alice is coming home that night. 2- Winston destroys PeeBee's science project and Dennis challenges him to beat PeeBee in the perpetual motion cross-country race. Winston and his nerd friends cheat in many ways, but despite their booby-traps and misdirection, PeeBee and Dennis win the race. 3- Before leaving for the auto show, PeeBee's octane booster is poured into Henry's car and they literally fly to the show and give a fantastic performance in the daredevil show winning the trophy, but also winning summons to traffic school from the police.