Two American tourists find a lost dachshund in Rome, and discover there is a reward for its return. When they head for Monte Carlo to return the pet, they find the owner has been murdered and they are the prime suspects. Comedy, starring Sean Young, Richard Lewis, John Candy, Cybill Shepherd, James Belushi, George Hamilton and Ornella Muti.

On their way to Monte Carlo, Monaco, Marilyn and her husband, Neil, meet several other married couples, including Julian and Phoebe, who are traveling with a lost dog they plan to return to its wealthy owner for a large reward. But, when the dog's mistress is murdered, the travelers become the prime suspects, and Inspector Bonnard is determined to track them all down.