A/N: I DO NOT OWN ANY OF YU GI OH 5DS OR ATLANTIS: THE LOST EMPIRE! ALL RIGHTS GO TO THEIR CREATORS! ALL I OWN ARE MY OCS!

Hey, guys! I know this seems a bit young for an author my age to be writing, but I honestly don't care. I have loved Atlantis: The Lost Empire since I was a small child it just came out. It has always been my favorite Disney movie.

As such, I thought, "Hey! Why not make a crossover with it and make it a bit different as well?" So I made this story. I hope you like it!

Prologue

Screams rang through the air as the warning bell sounded out. A giant wave unlike any other went towards a civilization unlike any other. Red lights from a giant crystal floating high in the sky shot around the area like spotlights trying to catch an actor. People raced to get to the shelters. Three of which was a family dressed in royal clothing: A mother, a father, and a young son.

The son dropped a toy and began to hurry towards it, but his mother held onto his hand. She kneeled down and pulled the boy in front of him. She told him in their native language, "Don't, Yusei! Leave it!"

Suddenly, a light came down upon the woman and boy. The woman turned, as if in a trance, and a crystal necklace around her neck caught the light. She stood up and turned, slowly letting go of her son's hand.

"Mother!" the boy, Yusei, called as she was lifted into the air by the light. "Mother!"

His father ran up and wrapped his arms around the boy, putting his son's face into his chest as he said, "Yusei, don't look!" The mother was soon enwrapped by the light and the light spun faster and faster and grew brighter until the entire city was wrapped in a cocoon of energy and it was slowly brought deep beneath the surface.

The boy cried as his father held him, but looked at his own crystal around his neck. Every one of his people had a crystal and it had an energy that supported them and their lives. But he knew his people were far from being safe, even after they are protected from the oceans.

. . .

Yusei was a well aged man now. He seemed as young as fifteen when, in truth, he was about ten thousand years old. His people were dying and losing their way. He knew he had to find help from the outside world.

"Father, please," Yusei begged as he kneeled before his father, who laid in his bed weak. "I need to find help. I need to find the answers that lie outside this cave so we can find salvation. So we can save our people. Please, Father, let me go out there! I'll be back at a max of five years, if it even has to take that long. But I'll return, I promise!"

"Yusei…" he began weakly. "I understand your feelings, but the Kings of Our Past-"

"The Kings of Our Past would weep if they could see what we've become. Let me make them proud. And you know if anything happens, you, Leayna, or Raron can find me. And I'll come back immediately. Please, Father…" he begged. "Let me find a way to save you."

"Very well, Yusei. But I expect you back within five years," his father agreed. "If you're not back by then, I will send someone to retrieve you. Remember, Yusei," he slowly touched his son's face, "you're the only heir to our people. If we lose you, we lose more than ourselves alone. We lose everything."

"Yes, Father," the young man agreed and ran off to do his job.