Valeros is a veteran adventurer whose life as a mercenary lies far in his past. When conflict erupts, however, more aspects of Valeros's past come crashing into the present day than just his soldiering days. Now, separated from his longtime adventuring companions by a burgeoning war and vast distances, Valeros must rely on new allies to prevent a diabolic dragon's sinister machinations from coming to fruition. In an exciting race against the clock, Valeros must make himself part of the crew of the Wandering Star, under the command of former pirate and current Andoren operative Torius Vin, hoping to reach the site of a nascent Hellmouth—a living portal to Hell—before a dragon can use it and a sliver of a slain god to upset the balance of power in the region. With the aid of the enigmatic sorcerer and spy Vee, the naga oracle Celeste, and a young Eagle Knight with her own ties to Valeros's past, the iconic fighter and the crew of Wandering Star must overcome the forces of Hell with the fate of Golarion hanging in the balance.