Authors Note: This is the first 'fanfiction' I've ever written. I decided to take a stab at the Stargate: Atlantis universe when I was hit with an idea that I wanted to put to paper. It makes no formal relation to the events of the show. The story is mostly from John Sheppard's point of view, though it briefly transfers to other people's perspectives. Anyway, thank you for reading and I'd love to hear your comments.

Disclaimer: Obviously I do not own any of the characters from Stargate: Atlantis, but the idea and the introduced characters are of my own making.

Collision Theory: A theory that assumes that, in order for reaction to occur, reactant molecules must collide with an energy greater than some minimum value and with proper orientation.

Stargate: Atlantis- Collision Theory

Chapter 1

"The enemy of my enemy is my friend." –Arabian Proverb

As the gate opened Lt. Colonel Sheppard stood, hands clasped on his gun. He still couldn't believe he was standing here with a Wraith queen and a group of her guards. He had to fight every instinct to keep from blasting them to hell, which is where they all belonged.

This strange turn of events all started two days ago, a hive ship had contacted Atlantis with the help of Michael, the only Wraith to ever learn the existence of the forgotten city. It was an unfortunate fact, which in that moment gave the Wraith the upper hand. One word from the queen and hive ships across the galaxy would catch word of Atlantis. Within days an army of Wraith ships would descend upon them and even with the drones a full attack would leave the city in ruins. Given the dire situation Doctor Elizabeth Weir agreed to aid the Wraith queen, in order to keep Atlantis a secret. Her agreement was only meant as a play to buy time.

Now Colonel Sheppard stood with the Wraith queen in an attempt to help her hive gain something of value from an opposing hive colony. The part of the Atlantis team had already been completed. The Wraith needed to use the Atlantis gate and now he was here, on some unknown planet, to make sure the Wraith kept their word.

They were surrounded by dense forest with little of the orange tinted light trickling through from the two suns overhead. The ground was slightly damp, remnants of a recent rain. Encapsulating it all was the overwhelming sound of silence. It made the serene backdrop appear sinister; creating a place they shouldn't willing venture into. Colonel Sheppard was growing impatient.

"So what are we waiting for?" Colonel Sheppard questioned as he looked to Teyla.

She shrugged and looked towards the gate, "Perhaps they are waiting for others to join us. I can see no other reason for us to remain at the gate, though I am alarmed that they failed to mention this fact at our last meeting. It is only more apparent that we cannot trust them. However with the sensitive nature of this mission I must commend you for ordering Ronon to stay behind. He would have made this strained relationship even more difficult."

He nodded. Strangely he didn't feel the need to respond he was too busy focusing on the fact that the gate had been activated and something was emerging.

"Great, more company," he mumbled, "Hopefully they're more sociable..." With that he glanced to the Wraith queen adding a forced smile.

Eyes trained on the gate four men stepped through. Colonel Sheppard felt a tinge of relief. At least they were human. They each stood above six feet high, which made them look unnatural with their lean frames. He shook his head when he noted their attire, thin fabric. Great, more people to protect. Then suddenly a knee high boot emerged from the portal, which was connected to a woman. Dark hair, pale skin, and piercing green eyes, even if these people weren't sociable, at least one of them was attractive. Her face read cold as her eyes traced towards the Wraith queen. As the small group came forward it was obvious the woman was in charge.

"This is interesting..." he whispered to Teyla, who had noticed the apparent unease on the Wraith faces as well.

"Yes...I believe we may be gaining the upper hand, Colonel," she replied and quickly fell silent as a conversation with the new arrivals began.

"Commander Delacroix," the Wraith queen hissed, no longer masking her panic, "We believed lower command units would respond to this mission."

"I'm sure you did," the Commander exclaimed before turning her attentions towards a pathway, which snaked into the forest.

"Striking fear in the Wraith, changing the agreement without telling the Wraith...I like these people already," he said with a stifled grin, although he didn't understand what they had to be afraid of...they looked too pretty to be mean. He hoped he would be proven wrong.

"I didn't know you were in the habit of playing with your food?" the woman suddenly added as she glanced in Colonel Sheppard's direction.

Their eyes met for a moment and he felt uneasy. In that simple glance he knew he had been assessed and passed over. Apparently he wasn't seen as a threat. A mistake on her part, but he'd let it slide.

"Let us finish this quickly," she stated to the Wraith queen, who raised no protest.

With that she took lead, following a path through the dense foliage. Her officers immediately fell in behind her. Colonel Sheppard drew his weapon and headed forward with the rest of the group.

"You won't need that," a Wraith guard hissed as he walked beside him.

"Yeah...well I'd like it just the same," he responded with a smirk.