A pampered Beverly Hills chihuahua named Chloe who, while on vacation in Mexico with her owner Viv's niece, Rachel, gets lost and must rely on her friends to help her get back home before she is caught by a dognapper who wants to ransom her.

When Papi, Chloe, the pups, Uncle Pedro, and their owners move to a hotel, the smallest pup Rosa feels like she doesn't fit in, and Papi wants to make her feel better by showing her how special she is.

Puppy mayhem turns the lives of newlywed Chihuahua parents Papi and Chloe upside down when their rambunctious, mischievous puppies present one challenge after another. But when their human owners end up in trouble, the tiny pups will stop at nothing to save them - because in good times and hard times, the family always sticks together. So Papi, Chloe and the puppies embark on a heroic adventure, proving once again that big heroes come in small packages.