The bat-only punk rock band, Flying Blind, has a dedicated following of thousands of bats-their screechy sound really meshes with sonar hearing. While on tour to expand its fan base, Flying Blind stops at the Grumpy Woods for midnight performances. Soon tons of bat fans are keeping everyone awake at night! But when the bears start jamming with the band, its sound changes, driving away their early followers. This time it's Opal Owl who saves the day-and returns some peace and quiet to the woods. Illustrated in full color!