River Song is a mare entering her first year in Canterlot High School's Marching Band.
And what comes with marching band? Band camp, of course.

River Song is sure that band camp is going to be amazing- after all, it is a camp- but things don't always turn out the way you'd think, especially if you're spending a week with some of the craziest ponies in all of Equestria.
Well, this is band camp. What could possibly go wrong?
Well.... a lot of stuff.