Ueki recieves an invitation to a "party" held by Robert Haydn. So, Ueki, Rinko, Inumaru and Mori all go to an arcade that leads to Robert's underground theme park called Dogura Mansion. There, Ueki fights in the first round against Yun-Pao, one of the new members of Robert's Ten.

Ueki continues his battle with Yun-Pao, still trying to figure out Yun-Pao's limit. Later, in the next fight, Mori finds herself battling on the Cossack Field against Kabara, a member of Robert's 10 and a notorious hunter known in the underworld.

It's Rinko vs. Kabara, and they fight in the...cat field? The objective is to get the opponent to get eaten by a cat, and to do that, they have to turn into a mouse! Slap the cat's nose and they become a mouse! Kabara seems to have the advantage in this one thanks to his ability to fly, but Rinko has a few tricks up her sleeves: some new weapons and a...love of animals?

Ueki battles against Sano on the Rope-Jumping Field. The real reason why Sano joined Robert's Ten is revealed.

Sano joined the ten for a very specific reason: to rescue Inumaru from a devious attack by Karl Paccho. Using a Death Pentagon, an insect that can instantly kill a heavenly being, Karl forced Sano to join or watch his God Candidate die. But Inumaru's sense of justice won't stand for these conditions. He breaks the cardinal rule of this tournament: a God Candidate can only grant powers to one individual. When he gives Mori powers of her own, he is instantly sent to Hell, freeing Sano of the Ten's grasp. Of course this only serves to infuriate Ueki even more. With a challenge made to Karl Paccho, a new fight begins. But Karl has a surprise: his talent is to copy the power of other gifted. With all the power of Robert's Ten at his disposal, Ueki is in for a tough fight.

Ueki continues his fight with Karlpaccho, who has more tricks up his sleeve. An event from Robert Haydn's past is revealed.