Arriving at the castle, the group found out that Meyari was actually the queen. A feast was prepared for them and Meyari started talking to them about the tragedy of her kingdom, "in the Gouland Kingdom as well as the neighbouring one, we are forced to make sacrifices once a year."
"Sacrifice?" Yugi inquired.
"What do you mean?" Mokuba asked.
"If we do not offer sacrifices to the Five God Dragon, it shall destroy our land completely," Meyari replied.
"The Five God Dragon? Sounds like another Monster card to me..." Akia mumbled that last part so that Meyari and the sprites of the kingdom wouldn't hear her and take it in a bad way.
"I heard that the other kingdom has offered up a prince from a faraway land," the Mokuba look-alike said.
"That's nii-sama! Where is my big brother now?" Mokuba exclaimed.
"I'm certain that he's being held in the Dark Castle of the Sky," Meyari answered.
"How do we get there?" Yugi questioned.
Meyari then motioned towards something behind Yugi, "please look at this painting. This is a legend from a thousand years ago." The painting depicted a white bird flying through both the night and day sky. "This is the ancient ship used to get to the Dark Castle of the Sky. However, we are unsure where to find this legendary artifact."
"Can't we just use our monsters to get there?" Mai said.
"The Dark Castle is surrounded by a barrier that monsters can't cross," Meyari informed them.
"No way..." Mokuba uttered in disbelief.
Mai tried to comfort Mokuba, "it's alright. This is a game after all. There's got to be a way to solve it."
Baba and Meyari looked at Mai, a bit confused by what she just said.
"Don't pay attention to me!" The latter giggled nervously. "Anyway, have you decided on your sacrifice?"
"Ah... Yes," Meyari whispered.
Baba then took a handkerchief out of her sleeve and sniffled in it.
"It's me." The girl confessed. The group expressed their surprise at her declaration.
"But I believe that you may be able to save this land. The legend speaks of a group of legendary heroes that come to fight the dragon! It states "When the strongest dragon teams up, the Evil Deity will be destroyed." I believe that it is you this prophecy is speaking of. I am convinced that you can save this world!" Meyari expressed.
"I'm pumped, I'm pumped, I'm pumped! This is like a dream come true for a fan of RPG games!" Jounouchi exclaimed.
"You're really simple-minded... Saving Kaiba is our top priority right now," Mai retorted.
"But if we don't defeat the Five God Dragon, we can't save Kaiba. We're bound to come across it," the blonde teen replied.
Yugi and the others then agreed to help Meyari, since it would also help them save Kaiba. Meyari offered them warrior outfits to demonstrate her gratefulness.
Mai was given an armour that showed off her curves. It had a short skirt and a blue cape, along with a sword attached to her belt, "this kind of gives me a good feeling."
"You look gorgeous in it!" Akia told her friend.
The red-eyed girl had a mid-length dark purple dress that had slits on both sides of her legs, that stopped just above her upper thighs. It then transformed into silver breast plates that weren't really designed to protect anything as they showed off her cleavage, which would be the most vulnerable spot. She had long skin tight white boots with silver detailing and gloves to match. She was also given a white quiver filled with arrows, as well as a silver bow.
"Same back at you, lookin' hot!" Mai returned the compliment.
"Well, it's not like I'll know how to use this bow... How about you, Yugi?" Akia asked.
Yugi turned around to look at his sister and Mai.
"It's a bit embarrassing, but..." The short boy replied.
He had a basic armour on with a red cape. It looked like the male version of what Mai was wearing.
"Really? It fits you well," Mai told him.
"I wonder..." Yugi let out a nervous laugh. He then went to sit down on a crate.
"Is Jounouchi done yet?" The blonde woman inquired.
"He hasn't stepped out of the changing room yet," Akia noticed.
Jounouchi then peeked out through the curtain, "hey, why am I the only one wearing a costume like this?"
"It's fine just get out of there already," Mai told him.
As soon as he stepped out, Akia, Yugi, and Mai looked at him, speechless at what they saw. He was wearing a one sleeve fur cloth, white bandage arm bands, a monster skull on his head, and was carrying a mace.
"Freaking ridiculous, ain't it? I think so, too!" Jounouchi blurted out in embarrassment.
Baba was standing next to him, flustered at his response, "but that is the official attire of our legendary hero."
Before Jounouchi could retort, a lighting bolt thundered right out the window.
"What the...?!" The blond teen exclaimed in surprise.
The sky outside went dark. Everyone gathered outside. The sky was filled with dark menacing clouds. The princess also came out to the front, ignoring Baba's protests. As they all looked closely, countless monsters were coming down from the dark sky.
"What's going on?!" Akia yelled out.
"They didn't waste time coming here..." Jounouchi uttered.
"There are so many of them," Yugi observed.
Mai took out a card from her deck, "let's go! Valkyrie!"
Mai's monster spawned and charged at the army of monsters. She started killing them one by one. However, that didn't amount to much next to the how many there were.
Yugi told her to call back her Valkyrie, saying that he had a plan. He then took out a card from his deck, "I activate the spell card Black Hole! Destroy all the monsters!" Right when it was about to activate, a kunai shot through it, pinning the card out of Yugi's hand to the floor.
"What?!" The targeted boy exclaimed.
They all looked at where the attacker came from and saw a ninja monster on the castle walls.
"Dammit, Blue Ninja has the ability to stop one Magic Card," Jounouchi said.
Just then, Blue Ninja threw a net at Princess Meyari and trapped her.
"Princess! We have to do something!" Baba yelled out.
"We'll just get rid of it! D.D. Assailant! Get that sneaky little bastard!" Akia called her monster, which materialized and instantly charged towards the Blue Ninja, matching it in agility. D. D. Assailant then easily destroyed the ninja monster and Akia called her back.
The net started falling down, but was soon grabbed back by one of the flying monsters who immediately took off.
"Princess!!" Baba cried out.
"Meyari!" They all shouted her name. As soon as she was taken away, the sky cleared up.
"No way... Mokuba-sama..." The one who they believed was Mokuba said with a shaking voice.
"Huh?! Mokuba?!" They all exclaimed.
"When you say "Mokuba-sama"... Are you...?!" Jounouchi trailed off.
"Princess!" Baba said in relief.
"Then they took Mokuba!" Akia concluded.
Meyari, on the verge of tears, explained that Mokuba wanted to trade places with her so that he's the one taken captive instead. He believed that he would find his brother wherever they were going to take him. Meyari started to blame herself for what happened.
"If we could just get to that castle..." Yugi said. He then stepped forward, looking at the sky. His gaze then went to the ground where he saw a giant bird shape on the ground. "Guys! Look at that!"
"I feel like I've seen this before," Mai observed.
"Yeah, same here," Jounouchi affirmed.
"It's from that painting! The Legendary Flying Machine!" Akia recalled.
When they realized that, everyone went down to it. Meyari then issued a notice to everyone in the kingdom to try and find hints on how to revive the Legendary Flying Machine. Unfortunately, no one found any clue.
"Dammit! After all this!" Jounouchi expressed his annoyance.
"Calm down, Jounouchi. There must be a way," Yugi tried to reassure his friend.
"Don't you get it? This is a sick game created by those five hooligans! There might not be any solution!" The blond teen was letting his nerves get the best of him.
Yugi then started thinking of a way. Akia went up to her brother, "Yugi, what did Meyari say about the history of the machine? I wasn't really listening."
"She said that long ago it was used by... wait... That's it!" Yugi exclaimed in realization.
Akia winked at him. She had listened to what Meyari said, but she wanted Yugi to figure it out as well. He gave Akia a thumbs up.
"Princess! How long ago did the legend take place?" Yugi asked her to confirm the details.
"1000 years, I believe," Meyari answered.
Yugi, Jounouchi, Mai, and Akia went to the site of the flying machine.
"This means the machine has been dormant for that long," Yugi concluded.
"Yeah, so?" Jounouchi asked.
"So just use something to go back in time," Akia explained.
"Go back in time?" The blond boy questioned.
"Exactly," Yugi nodded.
"Ah! Your Time Wizard!" Mai realized.
Jounouchi then took out his card from his deck, "it's a bit of a gamble, but here goes! Time Magic!"
The Time Wizard spawned and the arrow on his staff started to turn. To everyone's relief, it stopped on the right symbol and time was rewinded.
The ground was shaking violently and the Legendary Flying Machine slowly started to materialize.
"We did it! It's working!" Yugi excitedly proclaimed.
"Yeah! Awesome!" Akia high-fived her friends.
After a short celebration, the group set out to save the Kaiba brothers.
Back to the real world, Honda and Anzu were having more and more trouble keeping the henchmen out. They kept adding bigger objects in front of the door and were pushing to keep it closed with all their strength.
The Legendary Flying Machine emerged from the ground, lifting Yugi, Akia, Mai, and Jounouchi up in the air.
"Woah!" Jounouchi yelled out.
"We're flying!" Akia shouted out.
"We're really flying!" The blond teen affirmed.
Mai then hugged Jounouchi out of happiness. "We did it!"
"I-Idiot!" Jounouchi was all red at the sudden hug, but his surprise didn't last long as the group heard the loud cheering of the citizens. They got up and waved at them. Earu then flew up to them.
"You want to come along?" Yugi asked.
Earu nodded.
"Alright! Let's go!" Yugi agreed.
The flying machine was getting closer to the Dark Castle. Jounouchi went up to the navigating wheel and piloted the ship's direction towards their goal.
Back in the real world, Anzu slapped one of the henchmen's hands out from where it was peeking through the door. Honda then pushed the door closed once again.
"I won't let you lay a finger on Yugi and the others!" Honda yelled out.
Meanwhile, Yugi and the others had reached up above the clouds. An army of monsters was waiting there for them, blocking the way to the castle.
"There they are!" Jounouchi braced himself.
"We'll beat them down!" Yugi asserted.
They all then prepared their respective cards that they would battle with.
"Harpie Lady and Rose Whip!" Mai called forth her monster.
"Mage Knight Giltia!" Jounouchi summoned his own.
"Black Magician!" Yugi followed suit.
"Ryu-Kishin Powered!" Akia did the same.
Their monsters were fairing well against the enemy. Suddenly, attacks started coming from below the ship. This caused Yugi to lose his footing, giving a chance for the enemy to attack him. Earu then heroically stood in the way of the attack, taking the damage instead. Black Magician then immediately destroyed the attacking monster.
"Earu!" Yugi cried out. He picked up the little fairy in his hands, "I'm sorry... I'm so sorry...! Because of me...!"
Everyone then witnessed Earu's comforting smile as it vanished into dust.
"Yugi..." Mai called to him.
Tears started flowing out of Yugi's eyes as he screamed in sadness. His millennium puzzle then started to glow and the other Yugi took his place.
"I won't forgive you! Big Five!" His voice was filled with much more authority now.
The ship had finally reached the barrier, as its tip started piercing through it, encountering some resistance. It shook the whole machine.
"We've hit the barrier!" Mai alerted everyone.
"Just a bit more...!" Jounouchi grit his teeth.
The ship then went right through and continued on its way.
"We did it!" The blond teen exclaimed.
As they got closer to the castle, a black hole appeared and fire shot through it.
"Damn!" Jounouchi cursed as he turned the wheel, trying to avoid a direct hit. The fire instead caught on one of the machine's wings and a fire dragon appeared through the black hole.
"Damn you!" Mai yelled out as she got her Harpie Lady to attack the fire dragon, the latter getting destroyed instantly. However, the ship was now on fire and was starting to lose altitude. Yugi then immediately summoned his Winged Dragon, Guardian of the Fortress that carried everyone on its back and flew away from the burning machine. Mai's Harpie Ladies carried the group's monsters up as well and everyone headed for the castle's entrance.