In a world ruled by Beast Tamers, humans awaken special gifts and form contracts with powerful companion beasts. After Kael Vale is stripped of his talent by his own family, he awakens a mysterious system instead. He dominates the bonding rite, stands out in the Hunter Tower trials, and defeats Darius Vale in the Wasteland Exam. By seizing rare resources in deadly secret realms, he strengthens both himself and his beasts. Then, in search of his missing parents, Evan steps into another world and begins a thrilling journey of beast duels, high-stakes trials, and nonstop evolution.