When Rocky and Bullwinkle damage the largest birdbath in the world, they set out on a musical adventure. And Fearless Leader attempts to become a musical superstar so he can amass a legion of devoted super fans who will obey his every command.

Rocky and Bullwinkle return to Frostbite Falls to discover that because they failed to rebuild the giant birdbath, their beloved town is now completely overrun with dirty, zombie-like birds.