Supergirl had flown to the waterfront arriving mere seconds after the Flash did. She had spied the red blur as she heard the sounds of gunfire and knew she was heading in the right direction. She was surprised at the giant shark she saw attacking police and the man in the red suit mercilessly. For a brief moment she observed the man she heard being called the Flash as he threw a lightning bolt and marveled at his speed thinking he may even be faster than her or Clark. But in the next instant, she knew she had to intervene as the shark thing has the Flash in a choke hold. She could hear his labored breathing and had no doubts that if she didn't help, he would die.

On the ground the police ceased firing as Flash was unable to move and King Shark was now using him effectively as a human shield while still strangling the hero. Kara flew in at super-speed, her heat vision hitting the shark in the chest to distract him long enough for her to land a massive punch that sounded like thunder across the water. Fortunately they were far enough inland that her punch knocked King Shark to the concrete as his fist opened and the Flash fell to the ground as well. Barry was still catching his breath as he looked up and saw the burns on the shark's body. Remembering the previous victim, he got back to his feet and was running around the new arrival as fast as his battered body would move.

"It was you! You're the one going around killing meta-humans! For what? What did we ever do to you? You know what, it doesn't matter! You won't kill anyone else!"

Kara kept track with her eyesight as the Flash continued to increase his speed. Soon enough he was moving so fast that a vortex of wind and lightning engulfed them just from his momentum. She knew he wasn't trying to kill her, just incapacitate her long enough so he could get answers. She also knew that he had misunderstood her intentions and that she was there to help. When she'd finally had enough, she used a trick she had learned from Clark in their training and unleashed her arctic breath, creating a patch of ice where she had anticipated his next footstep would fall. Barry immediately hit the patch of ice and skidded down the dock, his back hitting a police car.

His scream of pain instantly had Kara worried that she had severely hurt him as she ran over to where he was laying. Every officer immediately trained their guns on her, not knowing if she was friend or foe, even though she had taken King Shark down. She has been Supergirl now for nearly a year, but she still has some trouble controlling her powers when agitated.

"Miss, please step away from the Flash. We don't know who you are, but leave him alone and we won't hurt you."

"Officer, this man is hurt, and it's my fault. I promise I won't hurt him further. I'm going to take him to get medical attention. Please let me leave."

Kara easily scooped Barry up in her arms, intending to fly towards this Star Labs she had heard about. If they had facilities anything like the D.E.O. they would be able to help him. As she slowly flew up, a gun went off and a bullet hit her back, harmlessly falling to the ground below her.

"That was a warning shot. Once again, put the Flash down and we won't open fire."

Kara sighed, lowering back down to the ground and setting Barry on his feet. He was a little shaky at first, but his quick healing thanks to his powers had him feeling better in a few short minutes. Though she was cooperating, the police still had their guns trained on her.

"Now, we appreciate you helping with King Shark, but you're still going to have to answer some questions. First off, how did you do what you did...and just who are you anyway?"

"Sorry Officer, but I've got somewhere to be. Maybe I'll answer your questions another time. If you'll excuse me..."

Kara flew up into the air again, paying no attention to the repeated requests for her to come back. Barry watched in awe as she flew away before looking down at the bullet at his feet. She was still in close enough range for one more attempt with a gunshot, but the officer was stopped by the Flash.

"Sorry Lieutenant, but that won't stop her. This is the bullet that hit her the first time."

Barry tossed the bullet to the officer and upon closer inspection he noticed that it was flattened. As he dropped it the rest of the force stood there in shock as the sound of a sonic boom hit their ears. The flying girl was gone, and it was then that the officer in charge spoke.

"So she's bulletproof? This day can't possibly get any worse than it already is. Who do you think she was Flash, and how did she do all of that?"

"Two things, I don't know, and I'm going to find out. Call A.R.G.U.S. They can incarcerate King Shark. Like our mysterious new friend, I have somewhere to be."

As he sped off, Barry called in to Star to see if they had any news on the Meta from earlier. Caitlin and Cisco were still trying to identify him, but the only thing they had discovered so far is that his powers were electricity based.

"What about the green burns?"

"Still no definitive answer. Whatever did this, it burned 75% of his internal organs. His heart is a charred black mess. Like you and Joe thought, this was clearly done at point blank range."

"All right Caitlin, keep me updated."

"What about you? What are you going to do?"

"I've got another Meta to find. I'll check in later."

"Another Meta? Who is he?"

"I don't know...but she helped me beat King Shark."

Barry signed off comms as he circled the city five times looking for the girl with the red cape. He hadn't realized that she was watching him as he stopped running to catch his breath.

"Where are you, where did you go? More importantly, who are you?"

Supergirl heard every question he uttered. The Flash was persistent, she'd give him that, and she knew he wasn't her enemy. She wasn't entirely sure he was a true hero yet, but she could tell he had a good heart. Even though they hadn't officially met yet, she already found herself intrigued by him. She even was curious and wanted to learn more about him. But hiding up on the roof wouldn't give her that opportunity. Soon enough she was floating just off the ground right behind him.

"I hear you're looking for me, is it true, Flash?"

"How did you know? And how did you know where I was?"

"Super-hearing, and super eyesight. I watched your little run around the city. I have to admit, I'm impressed. I've only seen one other person move that fast. Somehow I don't think you were going full speed."

"I wasn't. So are you going to answer my questions?"

"Maybe...you wanted to know who I am, right?"

"Yes."

"Tell you what...if you can catch me, I'll tell you everything you want to know."

Supergirl flew off, and had the thought that the Flash wouldn't be able to catch her, but she also didn't know the extent of his abilities yet. Barry thought she probably does have super eyesight like she said, but so does he. He would have to in order to be able to catch bullets, which he has on multiple occasions. So he scanned the skies, and immediately caught sight of her. He could tell where she was headed and took off, leaving a trail of lightning where he had been. Kara could see him keeping pace with her as she was flying overhead. He was fast, and her suspicions were confirmed that he was faster than her. But she could tell he couldn't fly, and hovered above a building, he hadn't caught her yet.

Barry looked up to where she was suspended in mid-air. He could tell from her nonchalant hovering that she believed she had won and was free to leave with his questions unanswered. So what he did next surprised her, and she found herself even more intrigued as he ran up the side of the building, stopping a few feet behind her at eye level.

"So, we had a deal. I caught you, are you going to answer my questions now?"

"Well, technically you're standing on a roof and I'm still flying so you haven't caught me yet."

"Oh that's how it is?"

"Yeah that's how it is."

"Okay..."

Barry walked back to the other end of the roof he was standing on, leaving Kara confused as to what he was about to do. In the blink of an eye he was running faster than she could react and jumped through the air, gently grabbing hold of her as his forward momentum pushed them across the gap between buildings and they landed on the other side. As they both stood up, Barry let go. He was the one confused now as the woman was laughing.

"Sorry, did I miss something funny?"

"That was brave. How did you know I wouldn't fly away, letting you fall?"

"Because you're a hero. The way you helped me with King Shark proves it. And you didn't try to hurt me when I had you in that vortex, though I did get hurt."

"True, but you seem to have bounced back rather quickly."

"I heal fast. So, about my questions...?"

"What would you like to know, Flash?"

"Let's start with the who you are?"

"I'm Supergirl."

"Is that what the S on your chest stands for?"

"No, that's my family crest. I'm sure you've seen it somewhere before."

"I..."

Barry paused as Kara chuckled at his momentary confusion. She had a feeling he was smarter than he seemed and waited as a proverbial lightning bolt hit him.

"It's the same shield Superman wears! He's a legend! Seems like everybody I knew growing up wanted to be him."

"Even you?"

"No, I kind of wanted to be Sherlock Holmes."

Kara laughed again before Barry asked his next question, trying to get more in depth with Supergirl.

"So you're his kid sister, daughter, what?"

"Actually he and I are cousins. And technically, I'm older than him. I was born first."

"So you're an alien like he is?"

"You know he's an alien?"

"It was all everyone ever talked about. The interview with Lois Lane about Krypton..."

Kara got a wistful look in her eyes at the mention of her home planet. Barry had read the article by Ms. Lane and knew the destruction of Krypton was a sore subject for Superman and his cousin too.

"So that answers the rest of my questions then. What now?"

"Now you tell me about you. I'm sure there's more you want to know about me, but it's only fair if you tell me who you are, and how you can do the things you do."

"Well you know I call myself the Flash already. I'm not an alien like you are. I'm a meta-human. I got my powers when I was struck by lightning that bathed my body in chemicals from my lab. It was the same night as the particle accelerator explosion..."

"I saw that on the news. So you've been the Flash for..."

"A little over two years."

"And what made you get into the superhero business?"

"I got tired of seeing people get hurt. I've seen so much and I..."

Barry paused, he hadn't told anyone about his mother and what happened in so long that the thought of telling Supergirl; whom he had just met was daunting. And he realized at that moment that what Thawne had done to him still hurt even after the Reverse-Flash had been erased from existence. Kara could sense his trepidations and spoke to try and ease his mind. But she also made a mistake in that moment, revealing something she shouldn't know.

"Barry, it's okay. You don't have to explain further."

"Wait a minute...I never told you my real name. How did you know my name is Barry? Who are you really?"

Kara knew she had been busted. She tried to backpedal but the cat was out of the bag, and she really was there to help so she knew she had to be completely honest with him.

"You know who I am, Barry Allen. There's no point in hiding it. In addition to telescopic and heat vision, I also have x-ray vision. I could see through your mask."

"Okay, I should have expected that. But you say I know who you are. I know you're Supergirl. Who else are you?"

"We met earlier today...," Kara pauses as she pulls a pair of glasses out, Barry doesn't ask where she was keeping them as she puts them on her face. "My name is Kara Danvers."

"The Cat Co. reporter?"

Kara could only nod yes as Barry stood there appraising her. He was sure she meant no harm, but he now even had more questions than before and once again was hesitant to answer any questions about the murder, even if deep down he felt like he could trust her.

"Look Ms. Danvers, I..."

"Please Barry, you can call me Kara. If this is about the murder, I really do want to help. Being a presumed Alien on Meta killing I want this resolved just as much as you do. Look at it from my point of view, I'm an alien and there are others out there, if these murders continue, Superman and I will have far more to deal with than we already do. I know I'm asking a lot, but all you have to do is trust me."

Kara stuck her hand out, as a gesture of good will, hoping Barry would let his guard down. He stood there, still unsure of himself and her, but he knew that deep down, he had to give her a chance. He had also been met with fear by the citizens of Central City until he proved himself a hero. Slowly, he took her hand, both feeling a spark of electricity between them.

"Okay Supergirl, let's solve this together."

"Sure thing Flash, this looks like the beginning of a beautiful friendship."

Little did Barry and Kara realize that in the coming months as they worked together they would become so much more. With their agreement, Barry ran back down the building as Kara followed.

"Race you to Star Labs."