"Biography: Sammy Hagar" traces his path to fame, from a poverty-stricken child, to the lead singer of Montrose, to launching a successful solo career, and ultimately joining Van Halen. Explore how Hagar helped Van Halen get their first number one hit, uncover what led a band that was on the top of world to suddenly split apart, and how he has continued to leave his mark on the hard rock genre.