Officially a neutral world, Alderaan has become the focus of Republic and Imperial political maneuvering. Even as conflict between Alderaan’s noble houses threatens to turn into civil war, Republic and Imperial forces engage in a secret battle that could decide the planet’s fate. High in the mountains, both sides fight for control of Alderaan’s massive planetary defense cannon—a weapon powerful enough to devastate an enemy’s fleet and ensure domination over the planet’s skies.