Horus' armada is gathering... It has already defeated all the opponents sent against it, even the Emperor's personal executioner. The last obstacle remains to be overcome, and it will strike Terra, shattering the dream of the Lord of Men into dust. The Beta Garmon system is located on the most direct and convenient route to the Solar System and Terra. To conquer it, Horus gathers colossal forces and an incredible number of titans. Defeat here is tantamount to defeat in the entire war, and Lupercal does not intend to retreat. But the Imperium also understands the significance of Beta Garmon. From the almost incalculable reserves of the Imperial Army and the titans mobilized from everywhere, a huge force is formed that can withstand the combat power of the warmaster. The rebel and loyalist god engines go to war, and titans fight titans. This conflict is unlike any other, and the outcome of the battle will determine the course of the next phase of the war.