The famous American writer Suzanne Collins, author of The Hunger Games, wrote a series about the amazing adventures of Gregor of the Ground, creating an atmospheric and very memorable world. The inhabitants of the Underdark carefully protected Gregor from the last “prophecy of Time”: it promises too terrible events. But now, when a rat army is gathering under the walls of Regalia, when friends and loved ones are in danger, Gregor must forget about himself and become a Warrior again. The existence of the whole world is in his hands, and time is running out. He will have to find out what the mysterious code is, who the new princess of the Underdark is, cope with the dark side of his nature and end all wars - by entering into the most brutal of all wars...