Her Infernal Majestrix Queen Abrogail II of Cheliax summons her agents to the city of Egorian to address the current crisis with the Glorious Reclamation. Upon arriving in the bustling capital, the adventurers find themselves swept up in the cutthroat politics of the imperial court. To impress the queen and secure a royal audience, the wicked characters must scour the City of Thorns to root out and eradicate a secret organization that works to free halfling slaves. But to truly earn Queen Abrogail's trust, the adventurers must perform a sacrifice for the queen to renew House Thrune's contract with Hell, and there are many—both within the court and without—who wish to see the monarch dethroned.