Grandpa Lou is preparing to take the kids to the museum. However, they are insistent that Spike, the Pickles' dog, join them. A saddened Tommy reluctantly accepts that the dog cannot go. Tommy is crying beacuse he can leave the house. However, there are bigger problems in store. After the elderly grown-up falls asleep, the kids roam freely inside the museum, inadvertently leading to a dinosaur fossil exhibit getting broken, and the gang being expelled from the museum.