Sombra serves as the leader of the Crystal Empire's cadre of knights. Together, the knights protect the Empire and the Crystal Princess. For years, the only threat has been the occasional band of brigands sweeping down from the North. Now, however, something far more sinister is gathering power in the frozen Northern peaks. Set squarely in its sights is the Empire and the Princess. When this new threat draws closer, how far will Sombra go to protect the Princess?