In a world just a mirror-leap away from Equestria, a human Sour Grapes is a teacher and a boarding house landlord. She ends up dealing with both apathetic students and quirky tenants, but she's still the same Grapes with the same snark, but you get to see her as a history teacher in Canterlot High.

Will her unique perspective get the normally disinterested students to pay attention? Will she make it past her internship and become a salaried teacher? Will she go out on a date with that rather hunky dance instructor the school has just hired?

I suppose we shall find out, as the story unfolds.