Awakened on a desolate, war-torn planet, you are C4-621, a newly augmented pilot, thrust into the cockpit of an Armored Core with no memories of your past. Guided by the mysterious 'Handler Walter', your purpose is clear: survive, fight, and uncover the truth hidden beneath the ashes of Rubicon. Every mission pushes your limits, forcing you to confront the brutal reality of corporate warfare and the sacrifices made in pursuit of Coral. Will you rise above the fray and forge your own path, or become another casualty in the Fires of Rubicon?