When their guardian David Seville goes to Europe on business, Alvin and the Chipmunks—Alvin, Simon, and Theodore—are left home in Los Angeles with their babysitter, Ms. Miller. Later, the Chipmunks and the Chipettes—Brittany, Jeanette, and Eleanor—play the arcade game ''Around the World in 30 Days'', and Alvin and Brittany argue over which would win an actual race around the world. They are overheard by international diamond-smuggling siblings Claudia and Klaus Furschtein, who have $5 million worth of diamonds to distribute to buyers but no couriers who are unknown to their nemesis, Jamal. Claudia tricks the children into being unwitting mule (smuggling), offering to arrange a real race around the world between the Chipmunks and Chipettes for a $100,000 prize. To participate, Alvin tricks Ms. Miller into believing that Dave wants the Chipmunks to meet him in Europe.
Alvin and the Chipmunks, or simply The Chipmunks, are an American animated virtual band created by Ross Bagdasarian. The group consists of three singing animated anthropomorphic chipmunks named Alvin, Simon, and Theodore. They are managed by their human adoptive father, David "Dave" Seville.