Marcelo Sandoval is a high-functioning, extremely self-aware teenager with Asperger's syndrome. He has a compassionate mother, and a father, Arturo, who appear to be less empathetic because he pushes Marcelo into the "real world." Marcelo ends up with a summer job in the mailroom of his father’s law office, where he has to think quickly, multitask, and deal with people who are trying to take advantage of him. Over the course of a summer, Marcelo learns that he can function in society.