The eight participants have no time to be surprised, a cage closes over them and they are captured by Zamuza. Zamuza is not a human but the son of Saboera. His mission is to capture humans that will be used in genetic tests to create a hypermalefic creature. Zamuza wants to kill the king but Fly and Poppu intervene. Fly starts fighting against Zamuza while Poppu takes care of the king. But there is something abnormal. Although Fly uses all his powers against Zamuza, he isn't able to destroy the latter's body. It seems that Zamuza has already been transformed into a hypermalefic creature.
Zamuza did indeed use the results of his experiments on himself. But his body is only achieved for 90%: he can't use incantations anymore. Zamuza transforms into a gigantic monster. Fly tries to beat him but he used almost all the power of the dragon sign and is now at the mercy of Zamuza. Zamuza tries to swallow Fly with his second mouth. But Poppu attacks him with Gira. Zamuza counters with his combative energy. Zamuza swallows Fly. Poppu tries to find an idea to beat Zamuza, when suddenly Chiu appears and charges on Zamuza. But Zamuza is at least forty times greater than Chiu and the assaults of the rat have no effect on him. Poppu notices that Zamuza also breaths through his second mouth. He invokes Finger Flame bombs on Zamuza's head to deprive him of oxygen. Zamuza is forced to open his second mouth. Poppu asks Chiu to punch the hardest he can in Zamuza's stomach. Chiu tries a Rolling Punch and Fly is partly rejected out of Zamuza's stomach. But the punch was not enough and Zamuza attacks them again.
Meanwhile the participants try to escape from their prison. But it seems to be impossible to break the walls. Then one of the participants, "Ghost" notices the prison is a living creature. Fuam then remembers she learned a technique to break the wall!! Combining a punch with Mahoimi, can inflict severe damages to any living being. Fuam tries on the cage, with success. Zamuza is astonished. Fuam fights against Zamuza and manages to reject Fly completely out of Zamuza's stomach. Fly is still alive. It seems the new clothes he got from Leona protected him against the gastric acids of Zamuza. When Fly sees Fuam's new technique, he understands how to use the power of the dragon sign efficiently. He has to concentrate his power on the moment of the attack. He asks Chiu to help him get to the victor's sword.Zamuza understood that for Fuam's technique to be effective, she has to hit him with her bare fists. He spits a sort of slime on her hands to deprive her of this ability. He grips her and tries to break her bones. Ghost asks Poppu to invoke Mera on Fuam's hands to melt the slime. Poppu immediately reacts, and Fuam uses her technique again to break Zamuza's left arm. Fly got to the sword and prepares Aban slash with his last dragon force. He dashes on Zamuza and stabs in his heart.
Zamuza regains his normal form, but before he dies he takes off the little piece of metal on his forehead and throws it to his father. Then he slightly disappears in dust. Although his father did consider every one else than himself inferior to him, Zamuza sought some love and gratefulness in his father's heart. Fly understood what Zamuza felt.
But Fly still has no sword. After he has beaten Zamuza with it, the sword broke done. It was only an imitation of the real one, that has been offered to Hadora. The king of Romusu tells Fly and his friends that he's going to a meeting in Papunika to discuss the organization of all the countries in the fight against Ban. Maybe Fly could gain some information about another weapon. Fly decides to go to Papunika first with Rura to get information. Fly, Poppu and Fuam say goodbye to the people of Romusu and to "Ghost", who was in reality master Brokin who learned martial arts to Fuam and Chiu. Chiu decides to go with the Fly team to help them.