Who will the sixth grade students at Jose Urbina Lopez Elementary in Matamoros become? They are among the worst performing students in Mexico, the world they know is one of violence and hardship, and their classrooms are dominated by an atmosphere of overbearing discipline, not possibility. It might seem like a dead end… but it is also the perfect place for new teacher Sergio Juarez to try something different. There’s just one problem: Sergio (played by an amazing Eugenio Derbez) has no idea what he’s doing.