Author's Note: This is a crossover between three different things: The Flash, PJO, and Magnus Chase and the Gods of Asgard. Although Magnus Chase and the Gods of Asgard isn't really prominent. It just gave me the excuse I needed for...shoot. I can't tell you. That'll just spoil the story. Dang it. I'm not really sure when this is supposed to take place, it's just after all the stuff Rick Riordan has written, and also after a few other FanFictions I've written. I hope you enjoy the story! It's full of plot twists. Ooops. I've said too much. ;)

And hey, did anyone notice how on the Story Cover, Barry looks like Zeus in a costume? Could it be evidence of an imminent crossover...? One can hope.

Percy's POV

My fall break was going just great. And not a sarcastic "just great," I was actually having a good time. I was spending some time at Camp Half-Blood with Annabeth and my other friends and nothing unusually dangerous had happened. Yet.

Surprisingly, Thalia had gotten permission from Artemis to take some time off, so there she was. Nico had also dropped by, if only for a few days.

I had just been training with Annabeth, and I was frustrated by how good Annabeth was with that stinking knife. Every single time she beat me, even though I had the sword.

Annabeth and I went to sit by the lake and were joined by Thalia, Grover, and Nico.

We were just sitting together and enjoying one another's company when Thalia suddenly remarked,

"Hey, Annabeth. Show him that new toy Leo made for you."

Annabeth smiled. "Oh, yeah. You're gonna love this, Percy." She reached up to her neck and touched a small, owl-shaped amulet. When she pressed the glowing jewel in the center, the amulet swiveled around to the back of Annabeth's neck before splitting into two huge bronze wings with a helmet shaped like an owl.

"What?" I exclaimed. "That's awesome! Can you actually fly with those?"

"Yeah. Leo modeled them after those updated wings of Daedalus that we found in the Labyrinth, only he made them so that I don't have to flap my arms to fly."

"Where do I get mine?" I asked eagerly.

She laughed. "You can't, Seaweed Brain. They only work for children of Athena. Something about our power makes the wings compatible with us."

"Not fair," I sighed.

"Awww. You two are just sooo cute." Thalia stood up and began walking away. "Now come on. It's dinnertime, and I'm hungry."

We got up and walked to our respective lines, stomachs growling in anticipation.

Barry's POV

Barry raced through his morning routine. Not like normal raced, though. Like doing everything at six hundred miles per hour raced.

I'm gonna be late for work, he thought. I'm the fastest man alive, and yet I'm always late for work! What's up with that?

By the time he was done, Barry was starving. So, on his way, Barry stopped by a local doughnut place to get a couple boxes. When he was about one hundred yards away from the police station, he stopped. No one else needed to know he was the Flash.

While he was walking to the entrance of the police station, something black whooshed by him. Automatically his senses sped up, but even so, all Barry could see was a blur of black. The load in Barry's arms seemed to grow lighter, and when he looked down, he only had two boxes of doughnuts, instead of three. Barry whipped his head around looking for the culprit, but he could see nothing.

Still confused, Barry continued to walk to work. As soon as he was inside the building, he climbed the stairs to his lab. Stuffing a doughnut in his mouth, Barry sat down to write up a report on a murder that had taken place recently.

The circumstances of the crime were very odd, even by Central City's standards. The victim had serious burns all over his body, almost like what Firestorm could do. But that was impossible. Firestorm wasn't one of the bad guys. There were also large gashes in the body. Barry had found two different types of metals in the corpse and was testing them right now.

Barry was pretty sure that the victim was killed by a metahuman, but not one that he'd seen before.

Just great, he sighed. Another evil metahuman.

Then Joe came in through the open door. Noticing what Barry was working on, he exhaled.

"Please tell me we haven't got another one."

"Sorry, Joe," Barry replied. "Another metahuman seems to have gone all evil-maniac-who-likes-to-kill-people."

"Great. Have you been to STAR Labs yet? Cisco and Caitlin should probably know. What do you think this meta can do?"

"It's almost like Firestorm," Barry mused, "but different. More powerful. And there's something else." Barry scooted his chair over to another monitor with the with the results from testing the two metals found in the victim. "I pulled these two samples of metal from the body. One is easily identifiable. It's just plain old steel. But the other….it's nothing that's ever been discovered before."