When illegal Mexican nanny Margarita is fired by her cash-strapped yuppie employers, it sets in motion a chain of events that leaves her torn between loyalties and the law. Desperately in love, but feeling rejected by her commitment-phobic girlfriend, Margarita becomes resigned to starting a new life back home in Mexico. The family quickly discovers that Margarita's modest salary is the only good investment they've ever made and hatches a series of ill-conceived schemes to keep her in the country. Suddenly, it seems like everyone wants to save Margarita - everyone, that is, except the one person who can actually save her.