Rated T for mild language and violence. a Sonic/ Metroid crossover. Samus is out to kill shadow and take the chaos emeralds, not knowing that Black Doom is dead! Can Sonic and friends sort things out?

WE would first like to mention that WE do not own Sonic, Shadow or Metroid! That thought burns US! I will tell you that in this fic, Sonic lives on earth, like in the Sonic Adventure series. SPOILER WARNING! May give away events in Shadow the Hedgehog and Sonic adventure 2.

Chapter 1

Destroy the Ultimate Life Form at all costs!

Samus Aaron sat in the cockpit of her ship, wishing she had installed an auto-pilot. Earth was a long way away, and it might already be too late by the time she got there. She remembered her mission description all too clearly:

The black Comet is now heading towards the Earth. A race of aliens known as the Black Arms has targeted this planet as a feeding ground for their larvae. Spies have uncovered that the keys to their plans are 7 jewels known as "Chaos Emeralds" and a creature known as Shadow the Hedgehog, a.k.a. the Ultimate Life Form. Your objective is to get these Chaos Emeralds and destroy Shadow.

"Ultimate Life Form my foot!" scoffed the bounty hunter, "More likely a big bozo who is strong so he declared himself ultimate, or his creator did!" she added as she read Shadows history from the G.U.N. database:

Shadow the Hedgehog was created 50 years ago by Professor Gerald Robotnik aboard the space colony ARK as part of a project to create the ultimate life form. However, Shadow was discovered to be too dangerous, and the colony was shut down. Shadow did not go without a fight, and killed ¾ of the people aboard the colony. He tried to escape to earth, but was then captured. He is currently stored at Prison Island, in sector H-9.

Samus was a little surprised at what Shadow did, but the people of earth did not have very good weapons. She did not know that the archive was 1.2 years out-of-date, or that a lot had changed. She especially did not know of the existence of a blue hedgehog that fit the same vague description. She should have noticed a ship trailing behind her…

Station square is awfully quiet tonight thought Sonic as he ended his afternoon run but I call it dull, maybe Tails has something interesting for me to do. And with that he rushed to his fox friend's workshop.

Tails, it turned out, did have something interesting, and had called Amy, Rouge, Team Chaotix, and Knuckles over. "I found a Chaos Emerald…" he began, but Sonic cut him off "that's impressive and all, but you never call us all over when you do that!" "Yeah, but I also found two more!" The room was suddenly filled with silence. "Three chaos emeralds?" exclaimed Amy "How did you…" "Ahhhhh!"

Everyone turned to Knuckles, who had put his hand to his head and fell to his knees. "I… I feel some strange energy… from space!" "You don't think it's Shadow?" screamed Vector "No… it's like… nothing we've ever seen before… Chozo… I think that's what it's described as.." He then passed out.

Shadow stared out the colony window into space, something was coming, he could feel it.

That's the first Chapter! Please review! WE would love it!