Rocker Ethan Brand and his band are on the comeback trail when a former flame drops a bomb in his lap: his 13-yearold daughter, Janie Jones. Ethan refuses to believe Janie is his kid, but when her mom suddenly leaves for rehab, the child has no place to go but into the tour bus and on the road with the band. With no feel for fatherhood, Ethan continues his hard-living ways, giving Janie a crash course of the not-so-glamorous life on the road. As they learn to express themselves in music, they start understanding each other.