As the battles continue, Sophie must uncover the truth about the Lost Cities' past.

"Sophie battles the rebels-- and recovers dark memories from her past. She must question everything to find a truth that will either save her world-- or shatter it"--

The evil Warlock Lord is planning destruction and the only thing that can stop him is the legendary Sword of Shannara wielded by the half-elfin Shea Ohmsford, the last of the Shannara bloodline.

At age twelve, Sophie learns that the remarkable abilities that have always caused her to stand out identify her as an elf, and after being brought to Eternalia to hone her skills, discovers that she has secrets buried in her memory for which some would kill.

"Uptight elfin historian Brangwain Spurge is on a mission: survive being catapulted across the mountains into goblin territory, deliver a priceless peace offering to their mysterious dark lord, and spy on the goblin kingdom from which no elf has returned alive in more than a hundred years. Brangwains host, the goblin archivist Werfel, is delighted to show Brangwain around. They should be the best of friends, but a series of extraordinary double crosses,...

After receiving a mysterious message summoning him to a meeting, Geronimo Stilton finds himself back in the Kingdom of Fantasy, summoned by the Elves, who want him to travel to the Great Explanatorium to find an answer to the earthquakes that are threatening the Kingdom.