Ten years ago, humanity repelled the alien civilization known as the "Ash Apostles" in the Battle of Meridian Gate. Hero Adam Kane sacrificed himself to save the world and was enshrined as the legendary "Ashbreaker." A decade later, corruption and conspiracy fester beneath the surface of peace—military-industrial conglomerates and the government colluding to bury the truth of the war. Living under a new identity as a mechanic, Adam returns to his homeland.