A/n: Keep in mind that this is my first posted fanfiction. I hope you like it.

Chapter 1

Clave Member's POV:

It was noon on a saturday when the Lightwoods plus Clary Jace, and Simon were summoned to the living room of the New York Institute. There was a member of the Clave standing there next to Maryse. The man looked uncomfortable. He was thin and tall with salt and pepper hair. His cold hard eyes looked silver and he stood with a stiff back and a regal posture. His runes stood out against his pale skin. He set an unwavering gaze on each of the teenagers as they walked in. The only emotion he showed was a flash of disgust as his eyes settled on each of the teens. But it was only a flicker, gone so fast that nobody even noticed.

First there was Clarissa and Jonathan Christopher. Clarissa was, in fact, a Morgenstern. Both her father and her brother had given the Clave a lot of trouble. As for Jonathan Christopher, who insisted on being called "Jace", had been one of the Clave's main problems back when both Valentine and Jonathan "Sebastian" Morgenstern was still alive.

Then came Isabelle Lightwood. As tall, beautiful and strong as she was, the girl was rebellious. She was impulsive and stupid. She made rash decisions, not thinking anything through and often times almost getting herself killed.

After her was Simon Lewis. He had a complicated past. He had been an ordinary mundane who got pulled into the Shadow World along with Clarissa. The fool got himself turned into a vampire. A special vampire with a special ability. He became a Daylighter. A vampire immune to sunlight. Then, to add to his indestructibility, he got Clarissa to draw the Mark of Cain on his forehead. Then he, to save his friends, became a mundane once again and had his memories wiped of the Shadow World and anything having to do with it- including his best friend Clarissa and his lover Isabelle. Then, the insufferable Magnus Bane gave him back his memories and made him a Shadowhunter.

Finally, there was Alexander Lightwood, the eldest of them all and Jonathan Christopher's Parabatai. He was a quiet but noble and a brave Shadowhunter. But he was gay. There was no official law against gays in the Shadow World but they were not as accepted into society as everyone else. On top of the fact that his sexual orientation was bad, his partner was none other than Magnus Bane, the high warlock of Brooklyn. A Downworlder. (A/n: I have nothing against gays or Alec, I actually really like them but remember this is the Clave Member's POV)

Really all of the children in front of him had given the Clave trouble at one point or another. Sadly, they were the best Shadowhunters in New York. And as much as the Clave hated to admit it, they needed them.

The young Shadowhunters looked at him expectantly. Cleared his throat and calmly said: "The Clave has recently discovered the existence of another supernatural force. The largest amount of this new force was concentrated here in New York."

"Well, what is this 'new force'?" asked Isabelle.

The Clave member took a deep breath. "Demigods," he said.

It was as if a bomb had been dropped. At first there was a deafening silence that lasted 1...2...3...4 seconds. After that 4th second, it was all chaos. Everybody was shouting or panicking.

"Enough!" Maryse's voice rang through the room. They quieted at once though their expressions remained troubled.

"Apparently, the Greek and Roman gods have been alive for several millennia. They sometimes come down to Earth and end up having children with a mundane and the offspring is a demigod: half human, half Olympian god," said the Clave member.

"So all those stories, about Hercules, Theseus, Andromeda… they're all real?" asked Clarissa. The man simply nodded. "Well, what do you need us for?" asked Jonathan. "The demigods are incredibly dangerous. They are faster and stronger than mundanes. If their godly parent is one of the Olympians, they may possess some sort of special power or ability. They put the mundanes in jeopardy. They must be...eradicated."

"Why would they be in New York? Shouldn't they be in Greece or Rome?" Simon asked. "The gods never stay in one place. They've been all over the world, but now, they are in New York at the top of the Empire State Building in Manhattan. Now, these demigods are like eidolon demons. They look like ordinary humans. There is almost no way to spot them unless they are fighting or showing their power," he said.

"The Clave has come up with this." The member reached into his coat pocket and brought something out. It was a pendant. A green gem hanging from a silver chain. "It will glow whenever there is a demigod near, much like Isabelle's pendent does with demons." He handed it to Clarissa, who took it carefully.

"We have information on the demigods in files that have already been sent to your library. The roman demigods are not a threat with few exceptions. There is also a group of girls that call themselves the Hunters of Artemis that are not a threat except for one of them. Also, there are a few demigods you should look out for. The files explain everything. Do not disappoint the Clave."

With that, he turned and left.

The Next Week: First Demigod Mission

Jace's POV

There was something about this whole demigod business that i didn't like. I mean I get that we have to protect the mundies but they seemed like regular people. Apparently, the majority of them lived in this place called Camp Half-Blood. The Clave knows it somewhere in New York, they just don't know where. It's heavily protected by magic. I also learned that there are some demigods who don't even know they're demigods.

We had been studying the files the Clave sent and we have learned their strengths, weaknesses, and demigods who we should keep an eye out for.

As it turns out, the children of Aphrodite aren't much of a threat expect for this one girl: some chick named Piper McLean. She's got this power called "charm speak". It means she can charm you into doing anything using only her words. Her prefered weapon is a dagger...and she's good with it too.

Then there's one special son of Hephaestus. A guy named Leo Valdez. Now, Hephaestus kids shouldn't be underestimated, but this one especially. He's a fire user and a mechanical genius.

Then of course, there's Jason Grace. A son of Jupiter who turned Greek. He can fly, summon lightning, and fight with a sword.

There are other dangerous demigods they warned us about: Frank Zhang, Hazel Levesque, Nico diAngelo, Thalia Grace, Clarisse La Rue, and a bunch of others. But at the top of the list are two people: Percy Jackson and Annabeth Chase.

These two are a legend in the demigod world. Jackson is a son of Poseidon and Chase is Athena's kid. Together they're supposed to be super lethal.

The guy could breathe underwater, control liquids, the water healed and strengthened him and he was an incredibly skilled sword-fighter.

The girl didn't actually have any powers. However, she was freakishly smart and it was difficult to outsmart her. Her main weapon was a dagger but she also likes to use a sword made of bone. She was one of the best fighters and was not to be underestimated.

Some of the files had pictures of the demigods, but not all of them had pictures. Piper McLean had a famous dad so her picture was easy to get. Percy Jackson had been into tons of trouble with the mundane law so he had pictures too. A few others had pictures but not nearly enough. We would have to figure out their appearances based on Clave descriptions or just detecting them and having them tell us their name.

We got a message this morning that a demigod girl had been spotted. She was a daughter of Aphrodite who was around the age of 20 named Lianna. She had a picture in her file. She had won some beauty pageant or something. She was supermodel tall with chocolate colored skin, wiry black hair, and big hazel eyes. She had a thin face with high cheekbones and a warm smile.

She was beautiful, and she didn't look capable of hurting anyone.

She was seen in Brooklyn near a shopping center. That's where we would kill her.

Alec, Clary, Isabelle, Simon and I suited up and made our way over there.

"Doesn't this seem kinda wrong to anyone else?" asked Clary as they waited by a Starbucks for the girl to come in to view. Yes, I wanted to say, but I stayed silent. "They're not human Clary, or Downworlders," said Izzy. "Yeah, they're half human," reassured Alec. "So are we," Simon said quietly.

"It just doesn't seem right. We're killing someone who hasn't done anything wrong," Clary exhaled. "But these god hybrids are wreaking havoc on the mundane world," I said, finally speaking up. Suddenly, Izzy looked up and started pointing. "Look! There she is."

We turned around and followed Isabelle's line of sight until we reached the young girl in the picture. She looked like a regular, happy mundie… totally unaware that these would be her last moments here. She had a brilliant white smile and a perfect body encased in a strapless white dress. She was smiling to people as she passed and winking and even flirting a bit.

We got up and began discreetly following her. When she walked past an alleyway, that's when we sped up, trying to herd her into the alley. She looked at us nervously.

"Hey!" she said. "Leave me alone!" I had to give her credit, she may have been terrified, but she didn't show it. Her voice was loud, clear and steady. Instead of answering we pulled out our blades. Her eyes widened with shock and fear. After a second, her hand reached down to her boot and she pulled out a knife. "Stay away," she said calmly. "Sorry girl," I said. "But we can't do that."

We lunged at her and swarmed her while she struggled and screamed. Finally, we pulled back to see what we had done. That girl was not completely helpless. We all walked away from the fight with at least one cut. Of course though, we were much better fighters and we outnumbered her. She didn't stand a chance.

The girl was still not dead after we pulled away. Alec had managed to stab her in the stomach but the girl was still breathing though she was rapidly losing blood. We kneeled over her as she spoke one last time.

"You bastards are in trouble now. My friends, my siblings, my mother, they'll all come for you. Good fucking luck to you," she said. "I'm sorry," said Clary.

"Go to Hell," the girl responded. A single tear trickled down her cheek and there was blood all over her white dress. She had a drop of the red liquid coming from the corner of her mouth and trailing down to her chin. She coughed a few times and it was clear that if we left her here, she would die a slow, painful death, bleeding out. I took my knife and plunged it into her heart, not out of anger, or because she was the enemy, but out of mercy. Nothing should die like that.

This was the worst part of it all. Demigods aren't demons, no matter how much the Clave portrays them to be. They do not change into an ugly, monstrous thing when they die. They do not return to their own dimension. They look exactly how they did right before they die and the body doesn't go anywhere.

We sat in silence around the body. We watched as the light left her eyes. We heard her final words and we saw her exhale one last time before the muscles in her body went limp and her breathing stopped.

We had Clary open a portal for us to go back to the Institute where the body would be burned. We had gone through her pockets and purse to see what she might have. A lot of the stuff was regular mundane things: lip gloss, sunglasses, keys, a wallet with 20 bucks in it.

But there were some weird things in there too. She had several large gold coins in her purse. They were larger and thicker than regular coins and the edges were uneven. They had strange designs on them too.

She also had a plastic bag full of what looked like small lemon squares and a water bottle full of some sort of strange honey colored liquid. The cubes and the liquid smelled wonderful, but I think it would be a really bad idea to eat it.

After getting back home, we gave the body to the Clave member that was there plus the strange things we found in her purse.

I didn't like this mission. I don't like having to kill these demigods. They looked just like people, no matter how monstrous they were.

A/n: There. That was the first chapter. Hope you liked it. Should I continue? Yes? No? Please review and feel free to critique my work and to suggest any ideas of yours.