You probably have an idea on what this oneshot will be about, but if you don't then that's okay. This oneshot will be based on How The Grinch Stole Christmas! Demigod style! I am super excited for this and I hope you all love it as well, because I worked super hard on it.

I would like to thank everyone who left a positive review on the last oneshot. It was another one of my favorites and I'm just glad that it got the amount of love as the first one.

So with out further a due here is the first part to How The Eidolon's Stole Christmas!

You're a mean one, Mr. Grinch
You really are a heel
You're as cuddly as a cactus
And as charming as an eel, Mr. Grinch
You're a bad banana
With a greasy black peel

- How the Grinch Stole Christmas (2001)

It was the morning of Christmas Eve in Camp Half Blood. All of the younger children couldn't wait to see what 'Santa' has brought them and the older demigods couldn't wait to see their younger siblings smile with joy. One demigod couldn't wait for tonight to gather around the campfire and sing Christmas carols.

Will Solace was one of the hundred kids who stayed at camp year round. It wasn't always like this, but he knew that the camp would be a much better home than living with his mortal parents. He loved them, but he hated knowing that they were in danger from the monsters because of him. They only attacked once in his household and the was during his moms birthday. Luckily, Will had his bows and arrows ready and he killed the monster in minutes. However, it was that day when he decided if it was best to stay at camp for awhile. Just for the monsters won't target his family.

It wasn't easy leaving his family. His mother and younger stepsister were both crying, begging him to not go. Even his stepfather had a few tears in his eyes, but Will knew he was just putting up a show. Just to look like he actually cared in front of Will's mother. After tearful goodbyes, Will left his home.

Traveling back to camp wasn't as bad as he thought. He only encountered a few monsters and even managed to buy a few Christmas gifts. Well not really, he bummed into the one and only Conner Stoll at Time Square and he helped him out a bit. Since Conner was also traveling back to camp for the holidays.

Will wasn't surprised at how well Conner lived up to being the son of Hermes, God of theft. In fact, he was actually impressed at how many things Conner managed to snatch in a blink of an eye.

After a day of traveling, both managed to get to camp before dawn. They were welcomed back with open arms and Leo Valdez turned on his new machine to make it snow. It was the best way to celebrate the holidays.

Will and siblings spent most of their time singing Christmas carols. He taught the younger ones the songs and then they would perform them during the bonfire. However, he refused to sing 'Grandma Got Ran Over By a Reindeer'. He hated that song with a passion. I mean, who the hell even made up with the song? Did they really hated their grandmother to write a song about her getting ran over by a reindeer? It was just plain terrible and stupid.

If there's one song that Will still has to teach it's 'How The Grinch Stole Christmas'. It was actually one of his favorite Christmas stories and movie. Also, his siblings were dying to learn it.

After breakfast, he told his siblings to meet him back to their cabin, so he can teach them the song. The children of Apollo cheered when they found out the new song's title. As Will was walking back to his cabin to prepare the music sheet, he noticed the son of Hades hanging outside of his cabin. Nico.

Will was surprised to not see him at breakfast and was worried. Ever since the war against Gaea, they've become good friends. Although Nico didn't want anything to do with him at first.

"Hey Nico," Will greeted, smiling at the son of Hades.

Nico looks up, half smiling at Will. "Oh hey, Will."

A long time ago, Nico was only one who didn't wear the camp's signature orange t-shirt. Now, Nico was rocking his new look by wearing black jeans, black converse, and the camp's t-shirt. Around his neck was his very own beaded necklace. All thanks to little Ricky from the Hecate cabin who felt that Nico needed one of his own.

"Here, it's for you," he told Nico, holding up the necklace with leather rope and two beads attached. "One represents a sword for bravely fighting in the war and the other a ghost. For people can know that your proud to be the son of Hades."

Nico was so moved by this kind gesture that he accepted the gift. Even giving little Ricky a quick hug.

Will stood in front Nico, his hands inside his pocket jeans. "Why are you looking so down?"

The son of Hades shrugged, "Aren't you freezing from the cold?" He asked, not even answering Will's question.

Being the son of Apollo had a few disadvantages. He was more resisted to the cold than the other campers. They were all wearing jackets and beanies, but Will only had a long sleeve with his orange shirt over it and a pair of jeans on.

"Nah, I am actually very hot right now." He says. "But that doesn't answer my question."

Nico sighed, leaning against a pillar that held his cabin's front porch.

"I'm worried about Jason and Leo," he admitted to Will. "They've acting strange lately."

"As in?"

"Well, they don't join the bonfires as often. They avoid Piper, Percy, me, and Annabeth. Leo hasn't talked to Calypso and she's worried sick about him. And they miss training with Chiron. They try to never miss training since their powers are only growing stronger."

Now that Nico has mentioned it, the two demigods have been acting strange lately. He knew Leo loved the bonfires and Jason loved to hear Piper sing, so it was strange to know that they missed the most important part of the day.

Leo was head over heels over the young maiden, ever since he brought her back from the island, they've been inseparable. Until recently when Leo would ignore her all day and she would get so angry, she'll stay at the Hecate cabin. Not that they minded, they considered Calypso as an honorary member.

As for training with Chiron, Will knew it was important for them to learn to control their powers. Especially since they can hurt someone.

Will hasn't even noticed this behavior until Nico informed him.

"You don't think they're feeling ill?" Nico asked, knowing that Will does a few check ups at the camp's infirmities.

Will shakes his head. "Megan has checked them both and she says they looked and acted fine."

"When was this?"

The son of Apollo thought for a moment. "Like...early December maybe?"

"That's when it started," Nico muttered. "We have to investigate further into this."

Will was surprised that Nico wanted his help on this case, but had to decline. He had other plans and besides, maybe Leo and Jason wanted to be alone. It happens a lot here. Most demigods just want alone time. It's completely normal.

"Look, I'm sure that Jason and Leo are fine," Will assured Nico. "They might be worried about who got them for Secret Santa. By the way, are you going to the bonfire tonight? It's the biggest one we have! Besides the end of the summer one."

Nico shook his head, not looking at Will. "I never celebrate Christmas." At least not anymore, he wanted to add but bit his tongue.

Demigods don't celebrate Christmas, but they wanted the younger ones to have the childhood experience. They're children after all, they believe in almost anything. So it wasn't hard to convince them that one of their parents was a Greek god or goddess.

Will was happy that Nico was starting to join the camp activities and interacting with everyone, but it was Christmas Eve! Everyone celebrates it!

"Why don't you celebrate-"

Nico looks at his watch, "Oh crap! Is it twelve o'clock already? I need to Iris message Hazel." He says his goodbye to the son of Apollo and goes back inside his cabin.

Leaving a very confused Will Solace behind.

That same day, the whole camp were running around like the mortals during Black Friday. Everyone was carrying a present or two in their hand, ready to be exchanged the following morning. They all places a few presents underneath the Christmas tree that was in the center of the whole camp.

Earlier in December, the children of Demeter took all of their lessons into great use. With some help from the forest nymphs, they grew a large christmas tree that was around ten feet tall. It took the Aphrodite and Hecate cabin nearly an hour to put on all the ornaments, while the Apollo cabin placed the lights around the tree. The final touch was the golden star, which was made by the Hephaestus cabin. Leo just added the jewels.

Little Susie (daughter of Apollo) did the honors to place the star on top and with the help of Jason (before he went all weird), he flew them both up and she places the star. She was the youngest camper the camp has ever received. Grover was the one who actually took her from an all girls orphanage, while he was scouting Los Angeles for any demigods. Everyone was fond of the child, especially Percy and Jason. They saw Susie as a little sister and would play with her all the time.

Once Susie placed the star and got down on the ground again, Leo plugged the cord to light up the tree. It was probably the most beautiful tree anyone has seen.

Now, everyone at camp were gathering around the tree once again. Not to sing and hold hands, but to put a few presents underneath.

As a whole camp, everyone decided to part take in Secret Santa. While in each cabin (if they chose to) they would also exchange gifts, but between siblings.

Piper and her siblings agreed to do the gift exchange, but she was worried about the budget. Mitchell said to not worry about a thing, saying that in Christmas; there was no budget.

So, carrying ten gifts with just her two hands, Piper walked across the camp. She cursed and muttered under her breath, saying that it would be the last time she's participating.

Halfway through her walk, Piper sees her boyfriend Jason. She figured to might as well have Jason help since he was around.

"Hey, Jason!" She called out. Once the blonde boy heard his name, he looks at his girlfriend. "Come here," Piper says.

Without hesitation, Jason walks over to his girlfriend. Instead of greeting her with a kiss on the lips or cheek, he scowls at her.

"What do you want?" He asked. "I was suppose to meet Leo by the Hephaestus cabin."

Piper was taken aback by Jason's rude behavior. Something wasn't right here.

"I just wanted you to help me with these gifts," she tells him softy.

Jason rolls his eyes, pushing his glasses to the bridge of his nose. "Honestly, these don't look any heavier than Percy's ego."

Piper gasped, "What is wrong with you?! Percy is your best friend."

The son of Zeus chuckled, "Oh really? Then why is he always flirting with you? Aren't you suppose to be in love with me?"

"I am in love with you, but Percy is my friend also. He doesn't flirt with me either! Unless you were hit by another brick, you'll remember that he has a girlfriend."

"Ugh, whatever I'm done here and I'm done with you."

A couple of demigods stopped to watch the couple slowly being torn apart. Mitchell stopped to watch what would happen next. Worried for his sister.

Piper felt her heart raising. "W-what do you mean?"

"I'm breaking up with you," Jason said with no emotion. "Later, Piper."

Everyone watches as the son of Zeus walks away from a shock Piper Mclean. Mitchell immediately walks to his sister, taking half of the gifts and he puts his arm around her. He doesn't say anything and takes her back to their cabin.

The demigods who stopped to watch all felt Piper's pain. They themselves couldn't believe the scene they just witnessed. Piper and Jason were just so perfect together. Everyone basically shipped them in camp, even Dionysus, although he'll never admit it.

This wasn't the Jason Grace everyone grew to love and care about. This was someone else.

Piper didn't know what just happened though. Everything happened so fast. All she knew was that her heart was completely broken.

Annabeth and Percy were also having an off day and it began with Leo. Not only did Calypso come running to them in tears, but she told them about Leo burned her!

This shocked Annabeth and made her boil in anger. Yet, she claimed down and preceded to check the burn on Calypso's arm. Percy was the one who acted differently though.

Although things between Calypso and Percy were awkward at first, they put those feelings asides and tried to be friends. So over time Percy began to see Calypso as a close good friend. Not only did she consider Percy and Annabeth a great couple, but she was also a major help when it came to healing Percy after he would train with Leo, Jason, and Nico. Those three can get a little crazy when it came to training.

As soon as Calypso came crying to Percy and Annabeth, told them what happened, Percy seek out to find the son of Hephaestus

His anger was consuming him, for son the toilets began to explode and the waves from the beach began to get bigger. Causing a few of the younger kids to freak out and run to tell Chiron about what was going on.

"Where is he?!" He shouted, causing a few of the campers to freak out. "Where's Valdez?"

Janet, daughter of Demeter, walked out of her cabin to see who was yelling. She wasn't surprised that it was Jackson who was making so much noise. He sounded worse than a banshee.

"What the hell is wrong with you, Jackson?" She hissed, walking over the angry hero. "I just wanted to smell my poppy's and get some sleep, but no! You just had to come in like a freaking wrecking ball."

One of the Apollo children rolled their eyes, "I hate that song." They mentioned.

Percy groaned in annoyance. He didn't have time to get lectured by a Demeter child. Especially by Janet. She can go on for hours.

"I'm just looking for Valdez," he tells her kindly. "Have you seen him?"

Janet thinks for a moment and shrugs. "I saw him with Jason earlier, after he dumped Piper's butt to the curve. Both were laughing and were even walking through the camp's barrier."

Jason dumped Piper? Percy thought.

"Do you have an idea on where they've gone?"

"No idea."

Percy didn't say anything else. Instead, he goes into the training grounds and let's out his anger on the dummy's.

Later on, Annabeth found Percy passed out in the middle of the training grounds. Due to exhaustion.

Annabeth walks over to her boyfriend, kicking him lightly on the side. His hair was messier than usual and he was drooling. So he was still the same.

"Percy?" She kicked him again. "Percy?"

Nothing. So she said something that would sure wake him up.

"Your mother sent a package of blue cookies and Conner is about to eat them."

His sea green eyes shoot open and he sits up faster than Arion.

Percy takes out riptide, removing the cap. "No one takes my cookies." He threatened.

Annabeth rolls her eyes, helping Percy get up. "I was kidding. I just told you that so you can wake up."

The son of Poseidon sighed in relief, putting away riptide. "I'm sorry for walking out on you and Calypso like that. I just got angry at Leo and I just needed to do something instead of listening to Calypso cry."

Long ago Athena had told Percy that his fatal flaw was loyalty. A flaw that was dangerous for any demigod to have for it meant they would put others before themselves. His flaw has gotten him in a couple of fights and also nearly cost him use life. Despite only being friends with Calypso, he cared for her deeply and would hurt anyone who threatens her. She's been through enough.

"How is the burn?"

"Small, but it'll cure. Megan already did some magic and it should be good by tomorrow. Nothing to bad."

Percy shook his head. "What the hell is wrong with Jason and Leo?"

Annabeth raises a brow, "Jason?"

Percy explained to Annabeth one what Janet had told him earlier. Her grey eyes were beautiful, but they become stormy and dark when she's being told something she doesn't like.

"Son of bitch is going to die," the sound of lightening was heard, but Annabeth doesn't care. "Yeah! You heard me!"

Percy had to put a hand over his girlfriends hand as she ranted to the God of the sky on how she was going to kill his son. Lightening struck but no one got hurt...I think.

Will held Susie's hand as him and his cabin were walking back from the amphitheater after practicing. It was nearly dinnertime, which meant it was also time for the bonfire sing along.

They already rehearsed two songs and his siblings were getting excited.

Susie used her free hand to tuck on Will's shirt to get his attention. Will takes his guitar and uses its straps to put it behind his back. He then carries Susie in his arms.

"What's up, sunshine?" He asks, wanting to slap himself for using the nickname Nico gave him.

Susie poured, crossing her small arms across her chest. "Jason wouldn't play with me today," she told her brother. "He also told me that Barbies were for little girls and that he doesn't have time for me."

Will thought back to what Nico had told him earlier this morning about Jason and Leo. Then he also heard from Conner about how Jason dumped Piper. He never realized how much the camp get learn the new gossip in a matter of minutes.

"Just ignore him, Susie. I'm sure you caught him on a bad day."

"But it's Christmas Eve!" She cries. "No one should be having a bad day."

Will smiled, kissing the top of Susie's head. "I know but it'll be okay. Alright?" He sets her down on the ground gently. "Now, go back to the cabin and get cleaned up for dinner. I'll be there in a few minutes."

Susie nodded her little head and runs to joins her brothers and sisters. Will smiled to himself and went to go check on a patient at the infirmity.

Megan was standing outside with a clipboard and was wearing a surgeon shirt with long pants and boots.

"You're late," she says, tapping her foot.

"I held singing lessons with the cabin and a couple of other kids. Which," he crosses his arms. "You should've gone to."

"I had patients, Will." Megan argued, holding up the clipboard. "And so do you."

Will takes the clipboard and scans through the list of people that were checked in. One particular named stood out from the rest.

"Calypso checked in?"

"Yeah she had a burn on her right arm. Annabeth took her here and we just patched her up. She's fine I suppose."

Will raises a brow, "You don't think..."

"I asked but she didn't say anything and Annabeth told me that her and Leo got in a fight, and that he stormed off."

"So did he.."

"I didn't ask any further than that. If the patient didn't want to tell me, then I don't ask any further. Unless I need further information to know what's wrong."

Will couldn't help but smile with pride. "Spoken like a true doctor. Father will be proud."

Megan chuckled, "That's if we ever meet him."

Will chuckled, going inside the infirmity to check on the patients.

"You never know."

All of the campers gathered at the dining pavilion for dinner. Chiron, much to a few surprises, lined up the the tables to make one longer one. It was basically like a large thanksgiving table. A very very long one.

Chiron was seated at the head of the table, smiling as the demigods entered.

"Heroes!" He greeted them, allowing a few of them to hug him.

Percy and Annabeth arrived, both wearing jeans and long sleeves underneath their orange shirts. Some of Aphrodite kids suggested to wear formal clothing, but no one had that kind of clothing. So Chiron just said to go casual. Much to everyone's delight.

"Percy, Annabeth," Chiron greeted. "I'm glad you made it."

Annabeth smiled, "May we start?"

Chiron heard the eagerness of her voice but didn't question anything. Instead he guides her to a chair and has her seated down.

Piper and Will's cabin walked in, already singing Christmas. Piper was still feeling heartbroken but she wasn't going to allow Jason ruin this holiday. Not this one.

Soon, everyone was seated down and ready to begin to eat. Except for three chairs. On was between Piper and Will, another was seated next to Calypso, and the other was next to Susie.

The son of Apollo looked around for Nico, but he was no where to be seen. Piper noticed that Will was about to leave, but she grabbed his wrist.

"Nico won't be joining us," she told him. "He doesn't want to be with anyone right now."

"But why?"

Piper shrugged, "No clue but let's not push it."

Will looked into Piper's eyes, not sure if her eyes were also capable of controlling people. That would actually be pretty cool. Will looked behind him, hoping to maybe see Nico but all he saw was the bright tree. Will sits back down, promising himself to go find Nico after the bonfire.

Chiron stood up, coughing loud enough to get everyone's attention.

"Well, I would be lying to myself if I said that we had an amazing year without any problems or danger. I mean, who knew that Mother Earth would be awoken by a bloody nose? Who would've though?"

The campers laughed, while Percy turned brighten red. "I didn't mean- oh just continue." He waves his hand sheepishly, while Annabeth patted his back.

"Settle down now." Chiron says. "But I am glad to say that I'm more than proud to have seen you come together and battle as one. Against the Romans and eventually side by side with them. Hopefully, next year we won't have to deal with anything and have a normal year for once. Seriously, I may be centuries old, but I am very much capable of growing grey hair. Now! Let's begin our feast."

Although the gods didn't like the fact that the demigods were celebrating Christmas, they did enjoy the turkey and the smell of Apple cider being thrown into the fire though. That always made it up for it.

Nico followed the torch that Jason and Leo were carrying to lit their way through the forest. Nico knew something had been wrong with them for awhile and with the news of Leo burning Calypso, and Jason dumping Piper, he's belief was confirmed.

He ate a quick meal at the dining pavilion and packed a small bag of weapons that he might use. He then preceded to follow his to friends in the woods, to see where they were heading.

None of them had said anything to one another and they appear to be glowing as well. But from the upper area of their bodies.

"Where are you two doing?" Nico whispered, hiding behind a tree when Jason and Leo stopped by a stream.

Jason handed Leo his torch and removed his bag. "I managed to steal a couple of drachmas from Percy's fountain. That way we can call our master."

Master? Nico thought. A new enemy then, but why would Jason an Leo be working for someone? Unless...

"When the heck are we leaving these bodies and possessing new ones?" Questioned Leo. "This guy's girlfriend is so clingy and it really bugs me. I didn't want to, but I was forced to use fire just to get her away from me."

That son of a bitch! Nico wanted to scream. How dare he used Leo's gift and turn it into a nightmare for Calypso?

"She's hot though, more than Piper." Jason takes out a drachma and throws it into the stream of mist. "Oh Iris, goddess of the Rainbow, please accept my offering."

The mist accepted the offering and Jason whispered the name that Nico couldn't hear him. Soon, a man with a pirate hat and costume appeared. Another son of Poseidon, Chrysaor.

Nico knew that Chysaor was defeated by the seven. He was pirate, since he wanted to make a name for himself for there weren't much myths on him.

"Jason," Chysaor greeted, fixing his hat. "Did you take the dagger and the sword?"

Jason shakes his head, "I haven't master, it's been difficult to do. The girl hides her weapon well and your brother always has his weapon by his side."

"It's true," Leo confirmed. "Piper McLean's dagger hasn't been shown or Riptide."

Chysaor rubbed his chin, "Interesting...have you stolen anything else?"

Leo shakes his head, "No. You clearly stated that you only wanted the dagger and sword."

"No! I want everything that does demigods brats have! The tree, their gifts, maybe even a better wife, I don't know! Just take everything."

Jason and Leo looked at each other. Their golden eyes now clearly showing.

"They're singing tonight at the amphitheater for two hours." Jason told their master. "Maybe we can take the big stuff from the weaponry room and then take the rest of the gifts from their cabins."

"Take their gifts as they sleep," Chysaor ordered them. "You still have the sleeping dust I gave you right?"

Jason went threw the bag he had and took out a small brown bag that was tied by a ribbon. "Here it is. Got a whole bag to put the whole camp to sleep."

"Excellent," Chysaor got distracted by one of his crew members and he needed to disconnect the call.

Jason and Leo were whispering to each other, giving Nico the chance to slowly walk away and warn the others. He thought of Piper who can easily charmspeak the Eidolon's to leave Jason and Leo's body. Simple now all he needed to do was...

Smack!

Nico collapsed on the ground, unconscious. Leo was standing over him with a small piece of log in his hands. He threw the log in the ground, wiping his hands on his shirt.

"Is he dead?" Jason asked, worriedly.

Leo bent down and checked Nico's pulse. "Nah, he's alright. Won't be waking up until sunrise if we're lucky."

Suddenly the real Jason Grace began to bicker back and forth with the Eidolon that was inside of him. They bickered when he dumped Piper, saying that the Eidolon had no right to do that and he loved Piper. The spirit only laughed at Jason's misery.

So that is How The Eidolon's Stole Christmas Part 1! This is honestly my favorite one and it was seriously so much fun to write. How the Grinch Stole Christmas is literally the film I would watch during Christmas cause I just love it and I hope you all love it as well.

What's your favorite Christmas song or movie? Tell me! This way we can bond and just be friends! :) Never be shy to leave me a message, even if it's just to say hi.

Anyways, next chapter will be part two and I'm just going to leave this quote for you all get excited:

Jason then realized that it wasn't about of the older kids who'd heard him. It was Susie.

So that's a little piece of what you'll be reading next chapter and I am so excited for it!

As always, good luck with your finals and happy holidays! Make sure to leave a review my darlings!

Love you!