Ueki meets a new enemy named Anon, who is even more twisted than Robert Haydn ever was.

Ueki talks with Pekol who wishes to be strong just like Ueki. Inspired by Ueki's defeat of Gitar, he decides to quit working with Gurano. When he confronts his teammate about this, though, Pekol is verbally deflated and submits to Gurano's whims. With the ability to turn models into the real thing, Gurano summons a giant robot to combat Ueki. With no robot of his own, Ueki must rely on his own abilities. With a bit of ingenuity, Ueki knocks down the first robot, but Gurano summons another more powerful machine. How can Ueki keep fighting someone who can create an endless supply of powerful opponents?

Mori faces Memory all by herself. Still unsure of her power, she tries to bluff for time while waiting for her teammates. Unfortunately, Sano can't hear her cries for help and Ueki just passed out! Left on her own, Mori can only run away from the battle experienced Memory. Mori tries desperately to solve the mystery of her power, trying out every idea that pops in her head…

Sano took Diego's advice by heart and came up with a plan to defeat him. By making a magnetic track, Sano propelled himself towards a trapped Diego at incredible speeds and rammed him head on. Still, Diego was able to grasp victory by a powerful bluff while Sano was in the null power area. Now the games are tied one to one. Next up is Mori vs. Kilnorton, with an IQ of 179. Mori is freaking out about how to get him to do the special pose, but thanks to Hideyoshi, Mori tricks him! The problem is that Kilnorton has already planned for everything…

The final round is approaching and everyone is contemplating the upcoming round. Ueki and Mori chit chat and Ueki gives her his lucky charm, telling her she needs it more than he does. Souya sits on a cliff and comes to the conclusion that he is useless and a hindrance. And Rinko and Sano walk along in the forest, and Sano comments on how she still loves Robert. He tries to ease her troubles by telling her that they will get Robert back…

The fourth round begins and Anon explains the rules. They are quite simple: be the first to make it to Anon and defeat him to win. If they can't, Anon will destroy everyone. While Anon hides in his floating battlefield, everyone attempts to meet up with him, including Ueki and Ai, but they are stopped by Hellion Margarette. Margarette threatens Ueki then goes after Ai. However, due to Ueki's determination to stop Anon, Margarette reveals his true form, and the secret of The Protectors: they are sacred beasts in human form. Meanwhile, Li Ho is the first to meet up with Anon, and they fight. Li Ho stands up pretty well against Anon, managing to block most incoming attacks and show an impressive display of power as usual. However, he is no match for Anon, and is defeated after a long battle. Just as he faints, Rinko and Sano show up ready to fight. But they aren't alone. Ban Dicoot and Diegostar show up to help.

Rinko and group fight Anon and a long battle ensues. After going through several basic attacks, Ban and Diego creat a combination attack, while Sano uses a new special attack which, unfortunately, we never see. However, even these are ineffective. In the meantime, Ueki begins training inside the Heavenly Beast that Hellion Margarette has become, while Ai runs to meet up with everyone at Anon…

After waiting for a long time, the battle between Anon and Ueki finally gets underway. Ueki is even the first to get a hit off of Anon as he transfers the energy from his Raika to his Seikku in order to match Anon's speed. At this point, Anon unleashes his Maoh, the level 10 Sacred Treasure, and we finally get to see it. Maoh is a summoned creature that takes on a random form and is as powerful as the will of it's user. Ueki also summons Maoh, which takes on the form of Kobayashi, but is still less powerful than Anon. Anon seems to be getting the better of Ueki, until he reveals a secret: Maoh can only be summoned six times, and Anon is on his last one because Robert used it twice before the fight. However, Ueki still has two…

Ueki was able to beat Anon using Maoh. They went back to school and Sano studied geography to make and Rinko dumped Robert. Kobasen became Ueki's new homeroom teacher and the talent he wrote on the blank zai was "reunion".