Archon Defender follows the path of a young woman, Colette, as she seeks her way through adversity to redemption, as the world she once knew is torn apart by war and tyranny. The Empress Lucia has risen to power in Echelon, and is systematically persecuting the Shard Sensitive, and all who opposes her power. Orphaned while fleeing from Lucia's Regime, Colette seeks refuge in the nation of Archon. Having Awakened to the Shard, her abilities become fully manifest under the guidance of the Archon Council. Joining the Archon Defense Wing, she must confront her own feelings of isolation and despair, to stand against Lucia.