From the back of the book:
As Leska's plans near fruition in the depths of Ragesia, an old acquaintance shows his true colors, and the coastal town of Seaquen, home of the Lyceum Academy and a rallying point for thousands of refugees, finds itself the target of a new, more dangerous attack.
Certain of his own invincibility, the wind powered archmage Pilus seeks to destroy his old rivals, the mages of the Lyceum Academy. Another storm rolls over Seaquen, but this tempest bears an army amidst its thunder. As the town quakes under the dire gaze of the Tempest, Pulus's mile-long living airship, the heroes and their allies must band together in a desperate defense.
Can the heroes save Seaquen from this new threat and survive the Eye of the Tempest?