In Book 2 of this breathtakingly action-packed series, warriors clash in an ultimate face-off between enemy empires, but both sides share an equal enemy: Giacomo. Giacomo, his fellow artists, and their teacher are on the run after a showdown with Nerezza, the emperor of Zizzola, who has vowed to destroy them and their precious Geniuses. They flee to Rachana, a South Asian-inspired world where it's the most powerful warriors, not artists, who possess Geniuses. The power-hungry Rachanan leader is more than happy to have Giacomo and his team-he's eager to find the next Sacred Tool, the Straightedge, and believes it's hidden somewhere in his empire. Meanwhile, Nerezza has devised a plan to control Giacomo and bend him to her will. But she'll have to start an all-out war to get to him.