When Scout learns that her favorite author is doing an exclusive autograph session at the end of the year, she's determined to be there! She officially needs a plan...and when she finds out that her school's band is heading to the same location for their annual trip, an idea takes shape. Being a band kid can't be that hard, right?

As it turns out, learning how to play an instrument when you can't even read music is much, much, MUCH tougher than expected. And it's even harder for Scout when her friends aren't on board with her new hobby. Will she be able to master the trombone, make new band friends, and get to her favorite author's book signing? Tackling everything seems like a challenge for a supergenius superfriend supermusician--and she's just Scout.