The light of aura casts the world, and disasters also arise. Ares, burdened with the blood of the destroyed nobles and the curse of a dangerous heraldry, struggled to survive in Anvil City where ashes were raging. A life-and-death crisis accidentally awakened the out-of-control indigo power in his blood, leading to a fatal pursuit by the church's "Pure Light Knights". In order to survive and explore the source of the terrifying "grey tide" sweeping across the kingdom, he was forced to team up with the spirit-speaker girl Leah and the scarred mercenary Kaden to fight against the ruthless church, the treacherous nobles and the heretics who controlled the spirit ember. Ares must control this curse at the cost of power backlash, and reveal the shocking secret that subverts everything in the decadent Ember Era.