A pampered Beverly Hills Chihuahua finds herself accidentally lost in the mean streets of Mexico without a day spa or Rodeo Drive boutique anywhere in sight. Now alone for the first time in her spoiled life, she must rely on some unexpected new friends - including a street-hardened German Shepherd named Delgado and an amorous pup named Papi - to lend her a paw and help her to find her inner strength on their incredible journey back home.