For The Chipmunk Adventure , Forum & Discussions 2 Comment and Subscribe please... When David Seville goes off to Europe on a business trip, the Chipmunks, Alvin, Simon, and Theodore are left at home with their babysitter, Miss Miller - much to the chagrin of Alvin, who dreams of world travel. While the three are playing an arcade game of Around the World in Thirty Days with the Chipettes, Alvin and Brittany begin to argue over which would win an actual race around the world. Their conversation is being eavesdropped on by Klaus and Claudia Vorstein, two European diamond smugglers. Seeing an opportunity, the Vorsteins approach the children, telling them that they will provide them with the means for a real race around the world by hot air balloon, with the winner receiving $100,000.