"And what exactly was it that you were attempting to summon, Lord Eamon?" On the day of his Proving, Apprentice Summoner Samuel Eamon chooses a white rabbit as his familiar, summoning a creature from the Outer Spheres and dubbing it "Snowball." What he gets is a shapely succubus with bunny ears and a poofy cottontail. Turns out everything he tries to summon ends up a succubus. With his new Summoner's License, Samuel is sent with a former classmate as his escort to meet Runescribe Elantrica Ilmora-someone who just might be able to discern the truth behind his odd spin on Calling Magic. There's one more issue: This former classmate of his, now a nun, was his personal bully at the academy-and she's irritatingly gorgeous. Now they have to put differences aside to get the job done, facing goblins, monsters, and the perils of the wilderness together. As a relationship develops between the pair, how will Samuel manage his nightly duties to his succubi in tandem with his complex feelings for his childhood bully?