Hey Readers, new guy here. I accept reviews both good and bad.

I wouldn't call this a crossover since the Norse gods and other characters of Magnus Chase are in the same universe as where Percy and the others are.

Disclaimer: I do not own any of Rick Riordan's characters.

Everything was going great until a huge wolf just shimmered into reality in front of us. We were having Thanksgiving with Magnus' family. I sat beside Annabeth, who was currently feeding our only child, Persassy(Annabeth gave me the liberty of naming our child). Beside me, my mother, Sally ate a turkey leg. She ate formally, she ate as if she is eating in front of the gods. Next to her sat Poseidon, who wore his usual Hawaiian shirt, Bermuda shorts and leather sandals. A familiar aura of power lay around him, making me feel warm and cosy inside.

While I was eating blue turkey(I know, crazy right? I found ways to turn everything blue) I gave quick glances to the person beside Persassy, Athena. I was glad that she had warmed up to me since she saw Persassy. Although she did not seem happy about the name, she still liked him. Athena was, well, in simple words, ruggedly beautiful. Her grey eyes looked as stormy as ever. Just by looking at her, she has a striking resemblance to Annabeth(Which was obvious since Annabeth is her daughter, but don't judge me).

On the other side of the table sat Magnus Chase, Frederick Chase and Frey. Magnus looked like Kurt Cobain, Frederick was an athletic man with intense brown eyes and sandy colored hair. There is too much blondes in this family if you ask me, but there is another one. Sadly. Frey has blond hair that falls to his shoulders, blue eyes, a hawkish nose, a stubbly beard, and brilliant white teeth. Ta-da! Talk about a Thanksgiving with three powerful gods and demigods. Which naturally attracted attention. The pooled auras of demigods and gods were sufficient enough to make a monster think twice since all of us can summon our weapons in a blink of an eye, which was pretty much game over for the monster. Needless to say we were always prepared, which was great since, as I had mentioned earlier a huge wolf shimmered into reality in front of us. All of us went into overdrive, I sprang from my seat and threw my half-eaten blue turkey leg to the monster Rachel Dare-style. I saw Poseidon's trident appeared in his hand instantaneously, energy bolts danced around the tips of his three pronged spear.

Poseidon yelled, "Eat this!" as he threw his trident to the monster. (Which was surprising since Poseidon does not say such stuff) The trident was imbedded in the wolf's hide a few inches deep, making it wail in pain. But it was not sufficient enough to turn it into dust, shocking Poseidon.

Magnus and Annabeth joined in the fight, the former wielding Sumarbrander (A sword that was so cool, it makes my blade look like a toy) and the latter wielding a drakon-bone blade. The two stabbed simultaneously, making the beast's injury much more extensive.

I was not about to get overshadowed by them, I leapt and brought a downward slash towards the beast. I had barely made any progress when the wolf used its tail and whacked me in my midsection. It felt as if I got punched by ten cyclopes and I went flying and I hit the wall, creating cracks in the process. Once I fell, I clutched my stomach. I had a burning sensation inside, my stomach convulsed as I felt every sinew and tendon in my midsection ripple. I rolled from one side to the other as I writhed in agony. I felt so helpless. The last thing I saw was Poseidon fighting the beast before I blacked out.

When I woke up, I was in the Camp Half Blood infirmary. All the pain I had felt had subsided. I had difficulty raising my whole body upright.

"Oh, about damn time, Seaweed Brain." Annabeth said. Her hair was in a mess and she was sweating. My heart throbbed even faster as realisation dawned on me. Where is Persassy?

"Whe-where's our son!?" I stammered as I forced those words out.

Annabeth gave me a dejected look, "When you went flying to the wall, the wolf took Persassy and teleported him to one of the Nine Worlds. We need to save him, Seaweed Brain. We must."

I only had the guts to nod. I can't say anything else since I caused all of this.

"Where's Dad and Athena anyways?" I asked.

"They came back to Olympus. Emergency meeting called by Zeus. Even the Asgardian Gods came. Both Aesir and Vanir. The wolf was something else. Poseidon, Frey and Athena had difficulty fighting the wolf. Something is going to happen, Percy."

Well, how about that? When I woke up I found out that Persassy's captured and the Gods knew something big is going to happen. Wow. Some morning.

To get my mind off these problems. I went to the arena to fight some demigods. On my way there, I heard a few people regarding me and looking up to me. Some were saying, "Look! That's THE Percy Jackson! Saviour of Manhattan!" and "Oh gods. Its Percy! He's is so handsome!" They would all squeal afterwards, tip-toeing about. I had reached to arena and I saw a few demigods hacking their way in the dummies. I saw one demigod who displayed a proficient amount of skill, being twice as fast as the others. I approached him.

"Hey. What's your name? You're good."

He looked at me, albeit surprised, he smiled, he knew what was coming. "Hi, Sir Percy. I am Devon. Son of Ares."

"Would you mind? Let's duel."

He nodded.

Our swords clashed with a shower of sparks. I decided to use only seventy five percent of my skill and make the fight longer. His movements and maneouvres was quick and practiced. He tried to disarm me with the move Luke taught me, but he did not know there was a counter for it. When I countered it, I saw him starr in disbelief, with that moment of distraction, it was enough to use his move against him. His sword clattered against the floor.

"You're skilled. I must say. That disarming technique was my favourite move so I knew how to counter it." I praised him.

"Thank you, Sir Percy."

I gave him an encouraging pat on the back before I went back to my cabin. I felt lonely inside. All the bunks were neatly placed and the pillows appeared as if it remained untouched, the vast expanse of the cabin inside had no one inside at all. Tyson was in Poseidon's palace with his other kin and I don't have any other siblings. I went to my bed and sat, thinking about how helpless I was when I battled the wolf. Maybe something really is going down? Maybe it is time to go back to Olympus. Maybe something is going to happen. Something that even the gods alone cannot confront. I felt apprehensive as all those thoughts crossed my mind, what's more is that Persassy has been captured, "I am a irresponsible father." I chastisised myself. Then, suddenly, a completely unrelated thought when in my mind, I need a better sword.

I saw Annabeth talking to Leo near the Big House. Probably about some suggestions on Argo III. I approached both of them and called out.

Leo raised his hand and gestured for me to come.

"Sup?" Leo greeted me, his impish grin noticeable. He wore a white shirt with oil splattered all over it. His magical tool belt wrapped around his pants.

"I'm not good. Leo, look, can you upgrade Anaklusmos?"

Leo's eyes gleamed with excitement, his nostrils suddenly went in flames. We all laughed. From what I saw, I'm pretty sure he felt excited.

"Sure, bro. Come meet me later." He said, trying to contain his excitement.

I nodded.

"Annabeth, hey, can you go to Chiron? We'll be going to Olympus. A bit abrupt. But then, we must. It's an emergency."

"Seaweed Brain, why?"

"Ragnarok is coming."

Annabeth's eyes tightened, her eyes stared right into me. "But it just ended!"

"Just do it."

Annabeth knew better than to argue. It was for our child's sake anyways. She ran to the Big House.

Bunker 9 was secluded. It was built beside a limestone cliff deep in the forest. The bunker was everything you need to prepare for a sudden mythological apocalypse, it was a weapons storage, workshop and a safe house. When I went inside, I saw Leo working on something, from what it looked, it was a sphere made of metal and a few wires were portruding from it. I walked nearer to them and spotted rows of workbenches and aisles of cabinets, storages and closets. From what Leo had told me before, it had a plethora of artefacts and materials, ranging from nails to a fake version of Zeus' lightning bolt. Calypso sat on a stool beside Leo, watching him intently and ocassionally asking him questions that Leo happily answers.

Calypso still made me feel guilty. I had forgotten her after the Titan War and I had neglected her. I looked away and in my surprise, I saw Festus creaking faintly(or snoring), his nostrils blew hot air once in a while. I cupped my hands around my mouth before I screamed. "Why does Festus still scare me?" I pondered.

Calypso might've told Leo that I was here, Leo turned around, he said, "Bro. About time."

I grinned, "Hey Leo, Hey Calypso." Calypso looked away, she was still not used to seeing me. After all those things that had happened between us in Ogygia. Leo patted her back, while he told her something that I did not hear.

"Well, let's get to work shall we?"

I uncapped Riptide, my pen slowly transformed from a pen to a three foot Celestial Bronze blade with a hilt wrapped in leather, a crossguard riveted with gold studs and a simple pommel.

"Okay. So Leo, is there any way you can add a long range weapon setting for this? Like make it a trident and a way to channel my energy here."

"I'll see what I can do." Leo said, I handed him my sword and he studied it. "You're blade is incredibly balanced. Such a magnificent blade."

I thanked him. "I'll be going. You can do this, Bad Boy Supreme."

I was walking around Camp Half-Blood when Annabeth called out to me, "Percy!"

I turned to where she was, she was running. Her hair flew as she ran, her blonde hair glinting against the sun. "Damn. She's so pretty." I told myself. (I always tell myself that. Don't judge me)

I suddenly felt distracted, I thought about how she looked at me, how she kissed me whenever I did something stupid, how—I was suddenly broken out of my reverie when she slapped me. "Seaweed Brain! Are you even listening!?" My face stung, "What was it again?"

Annabeth's eyes narrowed, "Chiron approved of our request. It was coincidental that the gods are actually summoning you, me, Magnus and Jason to Olympus at once."

I smiled, it had been a while since I had a quest with Jason. "So? Let's pack up now."

Annabeth smiled, her smile was the most beautiful I have ever seen. I got distracted again. Another sharp, stinging slap hit me, my cheeks reddened. My face contorted with pain.

"You're not listening again! I said I packed up already. What's with you today!?"

"You're just so pretty." I said simply. Her face reddened, flushed with embarassment.

"Well anyways. We'll be leaving tomorrow morning."

"Great. See you later Annabeth, time to see what Leo had done."

When I went back to Leo, his eyes were gleaming and he kept muttering, "This is it."

"Leo! What happened?" I asked him.

"This is the best craft I have ever made"-he handed me the sword-"it can transform to a trident by squeezing the handle and you can channel your energy through thinking of the water."

I wanted to ask how he did it, but, before I could inquire, he said, "How I did it is my secret."

I was surprised, Leo had never been this defensive on his work, much less on his closest friends. I just nodded, to avoid a fight. "Thanks Leo."

It was early morning when I woke up. The sun shone through the windows of my cabin. I felt cool and I rubbed my hands against each other for warmth. I smelled myself, my stench reeked of saliva. I needed a shower. After showering, I wore a usual Camp Half Blood shirt, pants and shoes. Once I securely tied my shoes, I heard someone knock on the door. I checked my pocket for Riptide and sure enough, I felt my pen there. I opened the door while gripping my pen, ready to spring into action. Once I opened it, I saw Annabeth, her blonde hair fell to one side, though it appeared to be wet. Maybe she just showered. She wore a standard Camp Half Blood V-neck shirt, jeans and hi-cut converse sneakers.

"Damn. She smells good." I told myself, though I felt like an idiot for thinking about that.

She looked at me and smiled, "Let's go Seaweed Brain."

I answered, "Just like old times, Wise Girl."