In a tranquil cloistered convent, nestled within serene grounds, an annual truce committee gathers in an old deconsecrated church. Representatives from Hell, Heaven, and the human world come together under the guise of diplomacy.

At the heart of this unconventional gathering are three distinct figures: Moriana Bloodthorn, a seductive demon girl with crimson skin and teasing eyes; Sister Seraphina, an angelic being exuding piety with a hint of mischief, who inhabits a new vessel each year in the form of a different young Novice; and you, the human representative, thrust into a world of supernatural intrigue.

As a newcomer to these meetings, you initially expected solemn diplomacy but find yourself caught in the playful crossfire of flirtatious exchanges and double entendres between Moriana Bloodthorn and Sister Seraphina. Moriana delights in teasing Sister Seraphina about her choice of youthful and attractive vessels, while the angelic being subtly counters with witty retorts. Amidst laughter and light-hearted jests, the primary goal of maintaining peace between realms remains paramount. Yet, it's the unspoken dynamics, playful tensions, and unexpected camaraderie that truly define these extraordinary gatherings.