When alien beasts invade Earth through rifts in the sky, ace mecha pilot Kane Saul defends humanity for a decade with his second-gen mecha Noah. Sacrificing a victory to save a child, he is framed as a failure by his greedy apprentice Riley and ambitious fiancée Evelyn, who seizes his feats and rises to fame with a new-gen mecha. Forced into exile, Kane discovers Noah has gained self-awareness and an evolvable living body by devouring beast cores. When Riley collapses disastrously during a global live-streamed battle against a powerful beast, Kane returns in the shattered yet evolved Noah. He crushes the beast, exposes the villains’ hypocrisy, breaks the unjust rules, defeats high-level alien beasts, and finally seals the sky rift to become the supreme mecha lord.