The improbable theory of Ana and Zak

Ana is an honor student obsessed with being successful at everything academic, Clayton is her thirteen-year-old genius brother, the youngest student in their high school and Zak is gamer who is forced to join the quiz team by his teacher--but when Clayton sneaks off to a science fiction convention in Seattle while they are all there for a quiz bowl tournament, Ana is forced to rely on the unreliable Zak to find him.