Danny Goldstein has always lived in the shadow of his identical, twin brother Sam. But when a hurricane of events forces him into the spotlight, he starts to realize that the only thing he's truly afraid of is himself. With the help of his costume changing friend Cher, a famous gay uncle with a mysterious past of his own, two aging punk rocker parents and Rusty, the boy who will become his something to live for, Danny begins to realize that the music of the heart is truly the soundtrack for living.