The Gang of Four continues to wander in search of magical Stones, and in the meantime, the young bard Rolin has ascended to the throne of Aglirta. However, noble barons and governors grumble, not wanting to obey the rootless boy king. Priests, former servants of the Great Snake, eager for power over the entire kingdom, are in a hurry to take advantage of their discontent. They send a terrible disease to the inhabitants of Aglirta - the Bloody Pestilence, which drives people crazy, makes them unbridledly cruel and even turns them into animals. Having mastered the power of ancient spells, the new Great Snake - the magical embodiment of darkness - becomes Ingril Ambelter, and again the dragon confronts him, personifying goodness and purification. Who will win this fight? And what will be the price of victory?