Boone Collins and Shane Butler are two of rock music’s brightest stars today. Their grandfathers founded a powerhouse rock supergroup that ruled the airwaves in the late 1970s, and the grandsons grew up in their shadows to become frontmen of their own successful bands. The epic rivalry between Boone and Shane is notorious, and it’s about to blow up.

When Shane’s grandfather Bruce inducts his deceased bandmate into the Rock Music Hall of Fame, he admits to the world that he wrote the band’s biggest hit about his best friend’s widow—Boone’s grandmother Vera Jean. The two want to rekindle their relationship, and their grandsons are determined to keep them apart. Only, working together for a common goal reveals surprising similarities between the rock stars as well as a chemistry they cannot ignore. Shane sees behind Boone’s glittery facade to the secrets he hides from his bandmates, and Boone is there to pick up the pieces when Shane’s professional world implodes. Together, they plot a musical collaboration to celebrate their grandfathers’ accomplishments instead of fighting—a star-studded tribute at the storied Rocktoberfest event in the Nevada desert—but will being in the spotlight prove to be too much for their fledgling romance to handle?