Shut Up! is the story of the love of two brothers, and their struggle to get through extremely difficult times. When their single mother is deployed to Iraq, 17-year-old Mario Barajas and his nine-year-old brother, Eddie, move in with their aunt. Mario is busy with his girlfriend, his job, school, getting fit for soccer, and everything else that goes along with being a senior at Hamilton High. It's no wonder Mario doesn't notice that Eddie's not laughing anymore, or telling corny jokes, or drawing happy cartoon characters.