Edward (Shawn Ashmore), a small-town American slacker, meets Albert, an old Mexican man who was once a mariachi. Enchanted by traditional Mexican music, Edward moves to Guadalajara, where he plans to become a mariachi himself. He becomes friends with Lilia (Martha Higareda) and develops unrequited feelings for her. Lilia helps him to advance his dream and enlists the help of Sophia (Lila Downs), the lead singer of a small mariachi band, to teach him.