Cat and the others were walking through the forest trying to locate the missing Kaiba brothers. When a group of Killer Needles attacked.
"Oh great!" Joey moaned. "As if we didn't have enough problems."
"That's not the only thing we have to worry about." Cat said. "Look up ahead." Further on ahead the group made out the shapes of three Cocoons of Evolution.
"Let's hope that they don't break free of those cocoons." Mai said.
"I summon the Fierce Knight." Joey said as his monster appeared to ward off the offending Killer Needles. Suddenly a Man Eater Bug came out from behind a tree and attacked Joey's newly summoned monster. The Man eater bug destroyed Joey's monster reducing his life points. Yugi then used his mirror force card destroying the killer needles. But a fire started from the destroyed bugs causing the cocoons of evolution to open to reveal three Great Moths.
"Oh no!" Mai called out. "The cocoons are open."
"I call upon the catapult turtle" Yugi called as he summoned his monster. "I also will use Kuriboh and the magic card Multiply." Yugi said holding up the corresponding card. Yugi's turtle launched the Kuriboh at the Great moths. The kuriboh multiplied in the air and exploded on contact when the hit the moths. After the moths were destroyed the gang headed on to a cave. They were running through when a hole opened above them and the head of a blue eye emerged, followed by Seto and Mokuba. Seto and Mokuba started running in their direction when they noticed them and stopped.
"Hello Yugi." Mokuba cheerfully said as Cat and Seto looked at each other. Cat rushed to Seto and once again threw her arms around his neck.
"Seto," she whispered. "I'm so glad your okay. I was so worried." She said squeezing him tighter. Seto gave her a return one armed hug. 'They didn't get her." He thought relieved. "Now that we have found you five; we can get out of this game." Seto said. They started preparing to leave when the voice of a KaibaCorp director was sent through the game.
"Congratulations on making it to the final level." The voice boomed.
"We aren't at the final level." Seto argued. "We stopped the ritual from being completed, therefore we beat the game."
The voice of the director chuckled. "That is not so, we have reprogrammed the game in our favor." And with that they started the ritual that summoned the Mythical Dragon.
"Their summoning the dragon anyway!" Cat yelled as the giant multi-headed dragon appeared before them with the attack power of 5000 and the defense of 4000.
"Well then, we'll just have to beat this thing." Mai said as she summoned her Harpy lady sisters. But Mai's monsters were struck paralyzed and were prevented from attacking.
"Why can't our monsters attack?" Yugi questioned when the voice of the director again came through. "Don't even try to attack, because a special field effect has been added to this cave. Since it is the summoning place of the mythical dragon the Dragon Seal has been activated. Only dragons may attack here." The voice boomed.
Seto laughed. "You dare challenge me too a battle of dragons." He crowed as he pulled out his Blue Eyes White Dragon.
"Red Eyes Black Dragon" Joey said as the monster appeared next to him.
"Hyozanryu" Cat called as the diamond plated dragon appeared behind her.
Yugi in turn summoned his Curse of Dragon, while Mia summoned Harpy ladies pet dragon. The group attacked with their dragons all at once. The mythical dragon retaliated blocking their attack. The mythical dragon then sent out an attack heading straight form Mokuba.
"Red Eyes" Joey commanded. "Block the attack from hitting Mokuba." Joey's dragon did as ordered and was destroyed in the process. This caused Joey's life points to turn to zero. "Sorry Yuge." Joey said gazing at the zero displayed. "But it looks like your going to have to beat these creeps without me." He said as he vanished from sight.
"No, Joey!" Yugi called out. Yugi then sacrifices his Gaia and his curse of Dragon to summon the Black Luster Soldier. But the dragon seal prevents the dragon from attacking as the mythical dragon sends out another attack. Mai takes them head on, but her dragon is destroyed causing Mai's life points to turn to zero.
"I'm sorry Yugi." She said. "I tried." She said sadly as she too vanished from view. "No, Mai" Cat called as she sadly watched her friends disappear.
"Kaiba" Yugi said addressing the CEO. "We need to work together if we are going to defeat this monster. Summon your Blue Eyes Ultimate Dragon." Yugi commanded.
Seto looked at Yugi from the corner of his eye. "I don't need your help defeating this dragon Yugi." Seto sniffed. The mythical dragon attacked once more.
"Blue Eyes, attack as well." Seto commanded. It was then that Cat saw what Seto missed. She ran towards him. "They aren't aiming for your dragon Seto. They're aiming for you!" she yelled as she pushed him out of the way, taking the full force of the attack that was meant for Seto. That attack reduced Cat's life points to zero as she fell weakly forward. Seto reached out and caught her before hitting the ground. Cat leaned against his strong chest as she looked into his shocked blue eyes. "Cat, why did you…"He began.
Cat's golden eyes soften as she leaned close to him. "Because I love you, Seto Kaiba." She whispered as she gently leaned in to give him a kiss. Her lips had barely brushed his when she, like Mai and Joey, vanished, and Seto was left clutching empty air.