Wrench, a young scavenger, struggles to survive alongside his father and brother, enduring constant oppression while never wavering in his determination to become a Mech Master.
After accidentally falling into an abyss, he encounters the divine spirit Vermilion Bird in human form at the brink of death. The lingering echo of a Heroic Spirit within him awakens a mysterious Spirit Mech, drawing him into a fierce struggle over Spirit Mechs and a conspiracy surrounding the Starfall.
But he refuses to back down. Just like the Mech Masters who defended the Mystic Realm ten years ago, he boldly takes control of his Spirit Mech and fights his way from Iron Wasteland Harbor into the invaders’ passageway known as the “Starfall Window,” embarking on a fiery journey to protect his homeland!