The Chipmunk Adventure is a 1987 American animated musical-comedy film based on the Saturday-morning cartoon series Alvin and the Chipmunks. Directed by Janice Karman and written by Karman and Ross Bagdasarian Jr., it stars the voices of Karman, Bagdasarian, and Dody Goodman, and follows the Chipmunks and the Chipettes as they go on a hot air balloon race around the world that is the cover for a diamond smuggling ring. Plot When their guardian David Seville goes to Europe on business, the Chipmunks—Alvin, Simon, and Theodore—are left home in Los Angeles with their babysitter, Ms. Miller. Later, the Chipmunks and 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 mules, offering to arrange a real race around the world between the Chipmunks and Chipettes for a $100,000 prize. To participate, Alvin records a phone call to Dave and edits it to trick Ms. Miller into believing that Dave wants the Chipmunks to meet him in Europe. The two teams set off by hot air balloon, each given a different route and twelve dolls made in their likenesses, which they are to exchange at designated locations for dolls in the likenesses of the other team to confirm they visited the locations. Unbeknownst to them, their dolls are filled with diamonds, and those they are receiving contain cash. The Furschteins' butler, Mario, is secretly an informant for Jamal, who dispatches two of his men to acquire the dolls. The Chipmunks' first stop is Mexico City, where they join in a fiesta. In Bermuda, the Chipettes scuba dive to make their first exchange and Brittany is almost eaten by a shark. The teams continue their journeys, exchanging their dolls in various countries along the way. Jamal's men tail them, but fail to get the dolls due to various mishaps. The teams cross paths in Athens, where they try to outperform one another in a musical number at the Acropolis and are almost spotted by Dave. Frustrated by his men's failures, Jamal enlists the aid of a young sheikh who has his mercenaries capture the Chipettes