Based on the tabletop RPG of the same name, Our Brilliant Ruin depicts a world where intricate social ties of allegiance and conflict are tested by the Ruin — a malignant force that corrodes the world and turns people into horrific creatures.The mounting tension at Crane Mansion is cut by a supernatural attack, and accusations fly as the attendees scramble to reveal the truth behind Constance's transformation. Can Elizabeth, Arielle, and their unlikely allies elude the monster stalking the halls of the mansion? Or will they face the same grotesquely violent fate as her other victims?