Three brothers training to become knights must carry an important message for the king while evading traps and enemies, in a book where the reader's decisions determine the end of the story.

Jestro, the Book and their monsters are still on the loose, causing havoc all over the kingdom. No place is safe. In their relentless search for the lost magical Books, they are growing ever powerful and it will only be a matter of time before they can conquer the entire kingdom. The NEXO Knights are now an efficient monster-fighting unit, but even so, they have to upgrade their equipment and NEXO powers to keep up with the ever-growing threat.

"Talli is a Summoner: a nearly extinct people, hunted by those who fear their mysterious powers. As a baby, she was adopted by Lord Borin, and all was well for many years. But one day, their castle is sacked by Borin's rival, Lord Ulric. Talli escapes in the chaos and darkness with the help of the noble (some might say too noble) knight Sir Alan. With Ulric's forces hot on her heels, Talli and Alan keep one step ahead, gathering a motley crew of companions...