Summery: After the tangle with the Sailor Scouts, Sonic decides to take a vacation only to be arrested by the Guardian Unit of Nations (G.U.N.) for his "crimes." What crimes? It turns out that a mysterious black hedgehog that looks like him is to blame, but where did he come from? Can Sonic, the Sailor Scouts and the rest of his friends solve this baffling mystery?

DISCLAIMER&NOTES: Sailor Moon, its characters, locations, and any other plot devices were created by Naoko Takeuchi and are copyright of Toei Animation. Sonic the Hedgehog, its characters, locations, and any other plot devices are generally credited to Yuji Naka and are copyright of the Sega Corporation. I have also made some changes to the dialogues and omitted some fights and stages because they were more like fillers.

I just wanna say that Sonic Adventure 2 is one of the most epic games to date. I hope we can see more games like that soon....

Stage 1: Remember Me? MFM

"Intruder alert! Intruder alert! Security Breach at Gate 3! Intruders have been located in the north quadrant and are moving in the direction of the underground base! All units prepare to engage: Basic emergency battle formations! Standard Battle Formations initiated! Locate and stop the intruder from reaching the security area! This is not a drill! Repeat, this is not a drill!"

All the while the computer voice was shouting out the warnings and instructions through the loud speakers that were scattered all around the underground base, a bulky frame was blasting their way through the security robots that were guarding the corridors and security chambers.

In the cockpit of a bulky machine with two powerful legs and an attached lock-on gun, an obese man with an enormous moustache laughed gleefully.

"Muahahahahahah! This is all too easy!" Dr. 'Eggman' Robotnik laughed as he breached through base's defenses and slowly approached the center of the base. "Let's see what my grandfather was working on," the doctor grinned. "A top secret military weapon... The military shut down the research because they feared it."

Some time ago Eggman once again tried his Eggman Land Project only to be interfered by Sonic the Hedgehog and friends. For some reason, he wasn't sure how but Sonic accidentally used the Emeralds to transport all of them to his home land Japan which there they found out about nine beautiful but powerful guardian princesses called Sailor Scouts. Though they fight for the same cause, the Sailor Scouts weren't too chummy with the Freedom Fighters. Eggman decided to exploit this and tricked the Sailor Scouts into fighting the Freedom Fighters. When that failed, he then kidnapped their leader, their princess, and the true future ruler of Earth, Eternal Sailor Moon, and used her and the Master Emerald as batteries to power another one of his doom machines and used it against Sonic. The battle was tough but Sonic managed to free and save her from a horrible fate. Furious to the core, Eggman creates a copy of the Silver Imperium Crystal, the only power source on the planet that can rival the Master Emerald, and tried to use it and the Master Emerald to destroy the Islands of Adventure and bring the world to its knees. He didn't anticipate for the rebels and the supernatural princesses to kiss, make up and team up as one to stop his plans.

The mad scientist had breached the last defense of the base and reached what they had been looking for: The Underground Facility! The Egg Walker 2.0 walked up to the control panel as Eggman looked down at it with glee. Then he looked into the pit that was behind it. A strange capsule was visible within.

"So this is the top secret weapon the military was afraid of? It's a lot smaller than expected..." He shrugged and looked closer at the console. "Enter user data... enter password..." He grinned and entered a few letters. "The password is... Maria!"

He reached into his pocket and retrieved a shining item which he held up into the air with glee.

"Good thing I was able to steal the white Chaos Emerald from that bank transport my robots attacked the other day... now all I have to do is to place it into this console and..." When he did, the capsule slowly moved out of the ground, while white steam was released. For a while, the doctor saw nothing but plumes of steam... but then, he saw a dark silhouette.

Is that… a hedgehog?

"No… NO! It can't be!"