In a world where humans are born in cages and ruled by monstrous creatures, a young boy witnesses the brutal death of his parents during their desperate escape. Rescued and raised in secret by a kind-hearted creature couple, he grows up dreaming of freedom — unaware of the fate waiting for him. When betrayal shatters his peace, he is thrown into slavery, forced to face the same cruelty his parents defied. But destiny intervenes: beneath the King’s Castle, he awakens an ancient power bound to his heart — the lost Crystal Ball of Humanity’s Hope.