When Dave goes on vacation without them, the Chipmunks and the Chipettes head off on their own in an around-the-world balloon race to meet diamond smugglers.

In a lively discussion with Lord Kelvin, inventor Phileas Fogg states his belief that it's possible for someone to travel around the globe in a mere 80 days. Kelvin challenges him to prove it, and adds a wager: if Fogg can't circumnavigate the globe in 80 days, he'll have to give up inventing forever. Fogg and his crew of two take the challenge. They travel by train, boat, balloon, horseback, or any other means at their disposal. However, Fogg and...