Horace and Morris, but mostly Dolores, are back again for another
uproarious adventure. When the three best friends decide to try out for
the school chorus together, they're shocked when Dolores (who can only
sing notes that no one has ever heard before) is the only one who
doesn't make the cut. After all, they've always done everything
together.
Once Horace and Morris start chorus practice, they're so busy that they
don't have time to go exploring or climb trees with Dolores anymore.
Feeling left out and alone, Dolores decides to take matters into her own
hands. But can she prove to Moustro Provolone that there's a place for
every kind of voice in the chorus?