Yugi and the gang once again find themselves at the museum where it all started. After searching around for more answers, they stumble across an old friend, a young girl named Rebecca Hawkins, the granddaughter of Professor Hawkins. Professor Hawkins is an old friend of Yugi's grandfather and he does various research on ancient carvings and treasures. They all stand in front of the stone tablet of the pharaoh as they discuss what is currently going on in the world.

"I've spent the latter of my career studying duel monsters. It started as more than a game. Egyptian sorcerers figured out a way to seal real monsters away in stone tablets. They would periodically release these monsters to display their great power. As more monsters were collected, the sorcerer's power grew stronger until eventually the shadow magic spun out of control and threatened to destroy all life on earth. But one man was able to face this madness and turn the darkness to light. The great pharaoh whose power you carry around you neck."

"How does that explain what's happening now? Did these ancient monsters come back or something?" Yugi asks.

"I'm afraid so. But there's another piece of this story that you need to know," Professor Hawkins says. "Ever heard of the lost city of Atlantis?"

"I've read about it in a book before!" Teá chimes in.

Tristan and Joey dim their eyes at her. "What? You nerd," they say simultaneously.

"In my latest expedition, I may have discovered that very city. An underwater world that existed long before ancient Egypt. But what really puzzled me were the carvings I saw on the walls!" The professor takes out pictures that he took and shows them to the group.

Yugi gasps in realization as he sees a carving of a dragon. "No way! Duel monsters?"

"Precisely! So these monsters didn't originate 5,000 years in Egypt. They lived over 10,000 years ago in what I believe in the legendary city of Atlantis!"

"Atlantis was real?" Tea asks with disbelief.

"I believe there's a parallel universe of monsters that exists along side our world. And throughout history, certain humans have been able to release these monsters. Some have been able to help mankind and others seek to destroy it."

Tristan groans loudly in frustration after hearing everything the professor is explaining. He found it hard to believe everything he is saying to be true. "Gimme a break you nutty professor!" But he soon regrets that outburst when Rebecca kicks him in the shin and he yelps in pain, holding onto it.

"That's my grandfather you're talking about! Anyone who messes with him, messes with me!"

"W-Won't happen again!"

Joey clears his throat and speaks up in a serious tone. "I believe you professor. After all the weird things that have happened to us over the years, including our friends being sent to the shadow realm, I don't think it's too far fetched at all. Let's face it, there's plenty of things that can't be explained."

Yugi nods in agreement. "Like how there's a pharaoh living in my puzzle."

Professor Hawkins nods before continuing on. "The point that I am trying to make here is this. When Egyptian sorcerers conjured these monsters 5,000 years ago, the pharaoh was there to save mankind from destruction. Now it seems the pharaoh has been reborn in you, which could mean that mankind needs his help once again."

Yugi sighs. "But I wouldn't even know where to begin, professor. I mean, do we try and get all these monsters to return to their own world? Or should we focus on what that weird motorcycle gang is up to?"

"Not to mention that girl who claims to be from the Shadow Realm," Joey adds.

"Unfortunately, this is where my knowledge of the situation ends," the professor responds.

A thought pops into Yugi's head and he reaches into his pocket to get the necklace from the duel yesterday. "Wait a sec. I may have a clue. Ever seen one of these before?" The necklace begins to shine as Rebecca and the professor look at it.

"It's awesome," Rebecca comments, gazing at it with fascination.

"What have you got there Yugi?" Professor Hawkins asks.

"Not sure. The guys we dueled against last night left it behind."

"Would you mind if I held onto this stone Yugi? I'd like to take it back to my lab. I have a feeling it may hold the answers to many of our questions."

"Not a problem."

After their conversation, they stand outside the museum. Mr Mutou offers to take Professor Hawkins and Rebecca back to the airport and they watch as the car departs.

'Just when I thought things were going back to normal, it got ten times weirder,' Yugi says in his head.

'Yes and this time the situation seems more treacherous than ever,' Yami replies.

"Please help me!"

Yugi's eyes widen and he looks from left to right after hearing a mysterious woman's voice.

"What's up Yugi?" Joey asks.

"Did you guys hear someone calling for help?" Yugi asks, continuing to look around.

"Nope. It's a ghost town around here," Tristan replies, placing his hands in his pockets.

Teá shutters. "Don't say ghost."

"Come on," Joey says. "It's been a long day."

In a dark cave surrounded by sculptures of dragons and lit candles, a blue haired man wearing a robe and baggy white pants looks down on his henchmen with his blue and yellow eyes.

"We located the pharaoh, master. Unfortunately, we weren't able to capture his soul," the blonde haired biker known as Rafael reports.

"I didn't expect you to capture him this soon. We've just begun."

"But you know me, master. I didn't come empty handed." Rafael hands over a box and his masters open it, revealing the cards he stole from Yugi.

"Excellent. The Egyptian gods. At long last, I've waited an eternity to hold their power in my hands. I finally have the supreme force necessary to awaken the great beast. And soon we shall rid the earth of mankind and rebuild civilization as it once was!" He places the three cards within three serpents' heads and raises his hands to chant a spell. "Serpents of the Orichalcos, please here my call. I offer to you the gods of Egypt. Use their divine might to unlock the sacred chamber of the great beast! Awaken him from his slumber by accepting my great offering!"

The three cards begin to glow within the serpents' mouths, and the light bursts within the dark clouds in the sky, causing a rainbow pattern to appear. Dartz laughs, seeing his plan slowly start to come together. "Finally after 10,000 years, the great Leviathan shall rise again!"

That night, Yugi tosses and turns in his sleep, constantly hearing a woman crying out for help. His Millennium Puzzle begins to glow and he suddenly finds himself alongside Yami, falling into a white light.

"What's going on?!" Yugi yells as they fall even deeper until they find themselves within a castle. It is large in size and there appeared to be three ice sculptures in the shape of dragons.

"You're here!" the woman says and she appears in front of them within a pink light. "I knew you'd find me!"

"It's Dark Magician Girl!" Yugi says in realization, recognizing her from the Duel Monsters game.

"Tell us, why were you crying for help?" Yami asks.

"Pharaoh, both of our worlds are in grave danger! And without your help we will all cease to exist!"

"But how?"

"Wait! So Professor Hawkins was right!" Yugi recalls from their conversation.

"A gateway between us has opened and now the great beast will swallow us all," Dark Magician Girl reveals. "It lives in the sky, feasting upon the life force of monsters and humans as it did in the past. If this continues, we'll be gone forever. You are our only hope."

Yami and Yugi both lower their eyes at the news and hearing the desperation in her voice. "How can we help?" Yami asks.

The Dark Magician Girl levitates up to one of the sculptures and motions at the sword that is within it with her hand. "These dragons defeated the great beast 10,000 years ago when it first appeared. But they paid a price and now they're frozen in time. The legend states that three warriors will awaken these dragons when they're needed again. And I believe one of those warriors is you. Release it by pulling out the sword and call out his name, Timaeus."

Yami and Yugi both exchange glances before levitating up in the air, placing both of their hands on the sword. "Ready Yugi?" Yugi nods.

Cairo stumbles a bit, using one hand to hold onto a nearby wall and the other one clenching her stomach. She slouches over and takes baby steps to progress down the sidewalk. Her legs feel like jello and her vision is blurry from feeling light headed. She looks ahead to see a building that reads, "KAME GAME" and then her eyes lift to the sky to see an odd rainbow pattern. A familiar spiky head figure suddenly runs out of the game shop wearing a duel disk.

"It's happening!" he yells, rushing toward the source.

"Yugi? What's happening?" His grandpa asks who had followed him out the door. He looks up to the sky in confusion. "Strange. I haven't seen patterns like that since my trip to Iceland years ago."

He hears an exhausted sigh come from behind him and he turns around just in time to see a girl drop face down to the ground. He quickly rushes over and kneels down to her. "Little girl, are you alright?" She struggles to get on her hands and knees and she lifts her head up, letting out slight chuckle with a dazed expression before dropping back down to the ground. "She looks exhausted." He slowly lifts her up and takes her into his shop.

Meanwhile, Yugi rushes to the middle of the city in a courtyard where other people have gathered to witness what is going on, including his friends.

"Yugi! Whatever is happening is getting worse! Or at least getting weirder." Teá comments as they all look up into the sky. There were duel monsters being sucked into the center of what seemed to be a giant ice sculpture.

"Any idea what that is up there?" Joey asks.

"I think I do and it's not good," Yugi answers, remembering his conversation with the Dark Magician Girl. The shards from the sculpture begin to fall, revealing a giant yellow eye to everyone's shock.

"WHAT IS THAT?!" Joey asks.

"I don't wanna find out." Teá shutters.

"Now great Leviathan. Time to show the pharaoh what true power is all about!" Dartz says from within his sanctuary.

On cue, the giant eye sends a gust of wind toward the pedestrians below. Teá, Joey and Tristan make a run for it, but when they come to a stop, they realize Yugi isn't with him. Instead, he still stands in the middle of the courtyard, bracing himself for whatever is to come, until the gust of wind slams down on him, trapping him within the middle.

"Yugi no!" Joey cries out in horror.

Yugi shields his face and grunts as the wind begins to pick up. But suddenly, a card in his duel disk begins to shine brightly enough for him to notice. Taking it as a sign, he draws the card out and and looks at it, gasping when it is none other than the dragon from his dream. Knowing that he doesn't have much time, he outstretches the card in the direction of the giant eye.

"Now I summon Timaeus!" he commands. In a burst of light and a letting out a mighty roar, a large green dragon appears in the sky on Yugi's command to everyone's amazement.

"Look at the size of that thing!" Joey says in astonishment as the wind continues to blow.

"Timaeus! Protect us from that monster!" His dragon faces the giant eye as it sends another gust of wind. But Timaeus has a power of its own, gathering all of its strength to shoot a fiery attack from its mouth to intercept the monster's. It overcomes it with ease as the big-eyed monster goes up in flames.

"No…this is impossible…" Dartz says with narrowed eyes, witnessing his monster being defeated by the legendary dragon.

Timaeus returns back to Yugi's deck and he sighs. "We did it."

A familiar pink light shines in front of him and the Dark Magician Girl appears with a smile. "We've only just begun." Yami appears next to Yugi as she continues. "The great beast is still weak, so he retreated for the moment. And for that my companions and I are truly grateful for that, my pharaoh." She lowers her eyes. "But many of us remain prisoners on the other side."

"What's next?" Yugi asks.

"The great beast will return again and his power will grow. He must be stopped before he is fully restored! Time is running out!" And with that she disappears, her pink energy floating up into the sky as Yami and Yugi look on.

Mr. Mutou sits across from Cairo with his chin resting on his hands as he watches her stuff down some food. He couldn't help but smile to himself as she eats as if her life depends on it. She pats her chest a few times and quickly gulps down some water, taking a deep breath when she is finally finished.

As he carries her into the house, she slowly opens her eyes and blinks. He looked so familiar to her. From his gray, spiky hair to the shape of his purple eyes. Even his voice sounded identical. "Shimon?" she says weakly and he looks down at her questionably.

"I'm not sure who Shimon is, but my name is Solomon Mutou," he introduces himself. She closes her eyes again and he frowns. She appeared to be very frail as if she hadn't eaten in awhile. He takes notice of her Egyptian clothing and golden headpiece with a symbol he is very much familiar with and raises an eyebrow.

Cairo belches loudly before quickly covering her mouth, turning red with embarrassment. She has long forgotten what it is like to feel hungry or taste scrumptious food. In the Shadow Realm, eating isn't necessary. Mr Mutou chuckles as she bows her head. "Thank you for the food."

"What is your name little one? Are you from around here?"

"It's Cairo. I guess you can say...I'm from Egypt." Maybe it would be best not to tell the old man where she really is from, although her answer isn't a complete lie.

Mr. Mutou nods with a smile. He had already expected that she was from Egypt, but wanted confirmation from Cairo herself. "Yes, I could tell by the attire. I know much about Egypt and its history."

"Really?"

"When I was younger, I traveled to the Valley of the Kings in hopes of finding the Pharaoh's tomb." Cairo edges forward in her seat, wanting to hear more. "The tomb was riddled with many traps and I almost lost my life until…"

"Until?"

"This might sound crazy to you, but the spirit of the pharaoh, who that tomb belonged to, saved me. And shortly after he saved me is where I discovered an item called the Millennium Puzzle." Cairo's eyes go wide. What were the odds of meeting the very person that not only navigated through the pharaoh's tomb, but was able to find the Millennium Puzzle as well?

"Wow…back in my day, going through the pharaoh's tomb was forbidden. But it seems nowadays that's a thing…"

He chuckles. "You talk as if you were born years ago."

Cairo rubs the back of her head with a smile and a nervous giggle. A bell rings as the front door opens.

"I'm home grandpa!" Yugi calls out and he walks toward the light in the kitchen. "You'll never guess what—" He stops in his tracks when he sees Cairo sitting at the table.

"Welcome back Yugi," his grandfather greets.

"Cairo! What are you doing here?" he asks.

"I found her passed out in the street," his grandfather explains. "She looked like she was in pretty bad shape, so I brought her here. Turns out she was just hungry."

Cairo tilts her head as Yugi and his grandpa speak to each other. That definitely isn't the pharaoh standing in front of her. But she was sure it was him when she saw him yesterday. It had to be. Her eyes scroll down to the Millennium Puzzle on his neck. Who is this imposter and how did he gets his hands on the puzzle?

As his grandfather goes up the stairs for the night, she hops up from her seat, approaching Yugi. "You can stay with us if you'd like," he offers. "Since I assume you don't have a place to stay, my grandfather says it's alright."

"Who are you?" she asks, whipping out her wand and pointing it at him.

He jumps and raises his hands in the air. "Whoa! What's going on?"

"Who are you and why do you have the Millennium Puzzle?"

"I-It's mine," he stutters. Sweat begins to form on his forehead as her wand begins to glow, as well as her eyes. "Take it easy, Cairo."

"How do you even know my name?"

"Uh…"

"You stole it. The Millennium Puzzle belongs to the pharaoh. He had it on the last time I saw him. So why do you have it?"

"Oh…" Yugi realizes that technically she and him haven't met. When they first crossed paths, the pharaoh was in control of his body. "Most people don't know the difference when we switch."

Cairo tilts her head to the side, her upper lip turning upwards. "What on earth are you talking about?"

"Hold on a sec." The Millennium Puzzle begins to shine brightly and she shields her eyes with her free arm. As the light begins to disappear, she uncovers her eyes and gasps. In just that instant, there he is, standing right in front of her. Her hand begins to tremble and she takes a few steps back.

"But…but how?"

"Yugi and I are able to switch who takes control by using the Millennium Puzzle," Yami explains looking down at her. "He is no thief."

Her wand disappears from her hand and her eyes return back to normal. "I knew they said you had returned all these years, but definitely not in this manner."

"Who is 'they'?"

"The souls that I'm currently after. They seek revenge on you for something that has happened 5,000 years ago. As a soul keeper, it is my duty to return them back to the Shadow Realm."

"But why were you given that role, Cairo?"

Cairo shakes her head. "It's a touchy subject. I'd rather not talk about it."

"It seems rather strange that someone your age would be given such a tough task."

She smiles innocently. "You underestimate me."

Yami raises an eyebrow in suspicion. There were so many mysteries when it came to this girl. He isn't sure if they could trust her or not. Sure, she saved their life last night, but with so much going on, there is no such thing as being too careful.

Hope you've enjoyed this chapter! Please leave me a review!

Also, there's some random user on here accusing me of stealing her ideas. Not sure what that's all about, but all of my ideas are mine. My imagination is pretty huge, so no need to steal lol. So, just wanted to clear the air if anyone noticed that "review" :|