Robert Gray returns after many years to take revenge on all those who cost him his military career. Just like last time, Zagor stands in his way; and he is once again the only one who will be able to stop the Alchemist's bloody and vengeful campaign!
Van Dergard visits places along the border looking for new people to fight in his gladiatorial shows. One of the fighters is Shamrock, who wears a powerful Indian amulet. Brave Wolf, from whose tribe it was stolen, is trying to recover the amulet.
