A/N- Quick filler chapter for you guys. Enjoy!

Thalia

Percy had really screwed us over in every sense of the word. As I watched him walk away, hands in his pocket as if he were taking a stroll down the beach, my eyes burned. He killed ten innocent mortals and dozens of campers. I didn't know how to even begin to forgive him for that.

"Thalia, help." Will Solace's coughs caught my attention and I immediately turned around to face him.

"Oh gods, Annabeth." I gasped, helping Will carry her over to an empty cot.

"Get...Katie. She has to know...what," Annabeth fought her way back to consciousness, her face pale but eyes still bright. "She'll know what this is."

Will's breathing was labored but he nodded. "We'll get all the containment in here-create a quarantine. This virus is definitely airborne." The son of Apollo nodded at me. "You should go before you get infected."

"No, I'll find Katie. I'm not letting anyone else die." I squeezed Annabeth's hand before leaving. Will followed at my heels and began streamlining the infected campers into the infirmary. I weaved through the crowd, trying to find Katie.

"Katie!" I called, stopping a few girls that had her similar hair color but they weren't her. "Katie! Kat-"

"She's over here!" A male voice called out to me-I briefly recognized it as one of the Stoll brothers. I followed his voice and was led to the porch of the Big house where the Stolls held a dying Katie and Chiron was with them, holding her hand.

"Percy's doing?" Chiron asked, his voice hoarse. I wasn't sure if he had been infected-maybe since he was immortal, he was immune.

I nodded, tearing my eyes away from my mentor's face. I couldn't imagine what this must look like to him. The kids he practically raised, trained to fight off unbelievable monsters twice their size, were being taken out by a mere cough. If Katie didn't know anything, we were monumentally screwed.

"Katie, can you hear me?" I asked her.

Her eyes were cloudy but she managed to nod. "Yes."

"Whatever you have, the other campers got it. They're dying. Do you know what this virus is?"

With help, the girl stood up, clearing her throat. "It was created by Paean, the former physician to the gods."

I nodded, motioning for her to go on. I had met the man on Mount Tam, he'd ran several tests on me and healed me after I'd been forced to fight demigods, Katie being one of them.

"I overheard him and Percy talking about it-Formula X. It's airborne, kills within twenty fours. Apparently, it's composed of the world's most dangerous plagues so you'd have to find the antidote to all of those plagues I'm assuming."

"We don't have time to do that. Katie, think, my dear." Chiron implored the girl. "The titans must have the antidote, maybe we can get on the Andromeda and find it."

"Maybe." Katie had a brief coughing fit before she was able to speak again. "I saw...Percy taking the antidote. I'm sure there's more on the ship. But...why aren't you getting sick, Thalia?"

I blinked as my audience of four looked up at me unexpectedly. "I-I don't know. I didn't take an antidote as far as I know."

"I'm immortal which explains why I'm not ill." Chiron stood up, a puzzled look on his face. "But you, however, are not."

Before I could even form an answer, Annabeth and Will ran up to us. The son of Apollo was still weak, straining to catch his breath. Annabeth, on the hand, seemed perfectly fine. Her forehead was no longer clammy, a healthy glow restored to her youthful face. What the hell?

"It's you, Thalia." She told me. "You're the antidote."

"Tell me again how this is possible." I whispered to Annabeth while I held a daughter of Aphrodite in my arms. Behind her were a line of campers, swaying from weakness but there was hope in their eyes-like I had the power to save them.

And this time I could but we were running out of time.

"You said Percy kissed you, right?" The blonde said, looking up from her laptop. She was looking for a faster way to speed the cure other than me just touching people.

As horrible as Percy was, I wasn't going to deny that I felt something when we kissed. A spark, that same passion that I had for him flared in me, melting away the events of these past months without him. "Right and?"

"Katie said he had taken the antidote and it was airborne as well. So he kissed you, transferring the antidote to you. You touched me when you helped put me on the cot and now I'm fine. Now all you've just got to do is..." She glanced at the line of demigods. "touch about fifty more demigods."

The girl I held took a deep breath and nodded to me. "Thank you."

"No problem." I told her, ushering her towards Will who escorted her outside. "Next." I grasped the hand of son of Hermes, giving him a small smile. He looked no older than twelve, same age I was when I found out that I was a demigod.

"So why can't you touch people and they're healed too? Because for every demigod I heal, two more die. It's not fast enough." I shook my head, looking to the next person in line. "Double team it." I extend my other hand and they grasped it without hesitation.

"Doesn't work like that. You must've gotten the bulk of the antidote since you got it from Percy, the source. I've already tried to pass it on, doesn't work. If Percy were here, it definetly go faster but..."

"That's not an option." I finished.

"Right." Annabeth shut her laptop, sighing. "But keep doing what you're doing. It's making a difference." Ironically, just after she said that two more demigods passed out.

Frustrated, I tried focusing on the kids who held my hand, hoping that some cosmic energy would accelerate the process. It didn't but in a few minutes, they were moved out of quarantine and outside. Four more campers latched onto me and the process was even longer, taking almost ten minutes this time. Demigods were dropping like flies and there was nothing I could about it. So I gritted my teeth and kept going. That's all I could do.

Will jogged up to Annabeth and me, clearing the kids I held to move out of quarantine. "I've got an idea."

"Well, spill it." The daughter of Athena said.

"Thalia, the antidote runs through your blood and next to Percy, your blood is an even better direct source than you just touching people."

"Are you suggesting a blood transfusion?" Annabeth's eyes went wide. "She doesn't have enough blood to support all these people-she'll die."

"Do it." I told him against Annabeth's protest. If I could save them, I was going to do so. "However much blood it takes, do it."

"According to my calculation, we should only need about one litre of blood." Will checked his clipboard, his blonde hair shielding his eyes. "The average adult has around 5 litres of blood. A loss of over 40%-around 2 and a half litres-will lead to death but that's without medical treatment."

"Then let's do it. Two liters, just to be safe." I said.

"Thalia, you don't have to do this." Annabeth reminded me as Will began giving orders to the other medics to bring out the blood transfusion equipment.

"Yes, I do. Besides, even if I get close to dying, Percy will have to fight to live too. Kronos wouldn't let him die-they've got the physician of the gods on their side."

"Still, if it doesn't work-"

"It will. It has to." I whispered. "This is all my fault, Annabeth. If I had just gotten out of Mount Tam by myself, Percy wouldn't have gotten caught trying to rescue me. He would've have done any of this."

Annabeth pursed her lips, looking away. "I hope you're right."

"Me too."

A minute later, I was staring at the infirmary's white ceiling, watching the fan go round and round. I was hooked up to an ivy, a pouch of blood resting on the hanger of the machine. My blood. Connected to that blood pouch was another tube, that tube traveled down over to over thirty demigods, going to their veins. Within five minutes, the bulk of them stood up, healed. One by one, I watched the glow return to their faces and they all got up to leave the quarantine. Will was right-one litre of my blood saved them. Just in case we missed someone or the virus somehow spread again, he took another litre of my blood, placing it on a medical tray beside the door.

"You were awesome today, Thalia." He told me, disconnecting me from the ivy.

"Could've saved more." I lamented, my voice hoarse. It even cracked. My head felt like I had been tossed around a few times but it was worth it. "How...how many campers did we lose?"

"Forty. Twenty percent of the entire camp." Annabeth answered, tears in her eyes. "That's the same amount you and Beckendorf took out on the Andromeda. An eye for an eye."

I drank that information in, trying not to cry. If I started crying now, I didn't think I'd ever stop. How much more of this could I take? The war hadn't even started yet and I felt like I had been gutted out repeatedly. It was only made worse by the fact that Percy had done this all. I knew him like the back of my hand. He had come up with the plan to infect us and only chose to save me because if I died, he died also. Despite all this, something felt off. Something apart from the forty dead demigods we'd lost over the course of a few hours.

There was not right with this picture and I couldn't place my finger on it. This was too...one dimensional. Percy wasn't a one attack and done kind of guy. So he got revenge for those killed in the blast and evened out the playing field. Kronos would certainly approve of that but Percy, he always had an ulterior motive. I was missing something.

Before I could voice my concern to Annabeth and Will, the daughter of Demeter came into the room, peeking her head in. "Is Thalia here?"

Annabeth seemed like she wanted to tell her to come another time but I rested a hand on hers, nodding. "Yeah, come in."

Katie closed the door behind her, looking better than she had when I first saw her. She looked revived and healthy.

"We'll give you some space." Will said, gesturing to Annabeth. The demigods got up and began cleaning up the cots and medical equipment.

"How are you feeling?" She asked, easing herself into the chair that Annabeth had been sitting in previously.

"I've had better days." I admitted. "But I'm okay and so is everyone else, thanks to you."

"Not the forty dead. I lost seven brothers and sisters today, the youngest was only ten." Her voice shook and I reached a hand out to comfort her. She grasped it, running her thumb over my knuckles. "I knew that I had the virus but it made me so weak and delusional, I couldn't even think properly to warn you guys. Percy, he told me not to warn you either and at the time, I was under that spell. I had to do whatever he or anyone else on that godforsaken ship said."

I nodded, sucking in a sharp breath. This wasn't her fault, she was just a pawn, used for destruction. "You're okay now. You're home." Katie's eyes had returned to their normal emerald green but there was a hint of cloudiness in her iris. I thought that was a side effect of the virus but now I remember that it was the same clouded over look she had at Mount Tam. I brushed it off, assuming that it was just leftover residue.

She was herself now, or so I thought.

"I'm sorry for fighting you. I-I had no choice. You have to believe that I never wanted to hurt you."

"I believe you." I squeezed her hand, smiling. "Besides, I don't mind getting a little roughed up anyway. It's part of being a halfblood."

She chuckled, wiping a tear from her cheek. "It's practically in the job description."

"Exactly." I laughed then sighed. "How'd they catch you? The Titans?"

"The battle. I lost my sword while on their side of the field and one of the monsters just grabbed me then took me to the Andromeda. And the rest...the rest you know." Katie took a deep breath, looking around. "I missed this place. I didn't think I'd ever see it again."

A wave a guilt crashed over me as if I had been the one who imprisoned her on the Andromeda. In a way, I was. I didn't even think of saving her or any of the other demigods when I was there. I only thought of myself. Typical Thalia.

I cleared my throat, gaining her attention. "Well, this place missed you. Welcome back, Katie."

Katie smiled, releasing my hand before rising up. "I'll let you get some rest then. Goodnight, Thalia."

"Night, see you tomorrow at breakfast."

"Gods, I never thought I'd look forward to eating camp's healthy food again. First stop when I get to the mess hall-I'm hitting up those whole grain waffles."

"I pour a boatload of blueberry syrup to mask the scent of healthy. Ten out of ten would recommend." I advised.

Katie laughed, walking backwards before slightly hitting the medical tray as she did so. "You didn't see that." She chuckled.

"See what?" I played along, snickering. With a smile, the girl made her way out of the door and I lay back down on the cot, closing my eyes. I knew I could make it to my cabin but I was fine here, just taking it slow.

"How are you feeling?" Will asked, concerned.

"Like I've been hit by a semi. Can a girl get some pain meds?"

"Coming right up." Will's laugh was light and airy as he made his way to the medical tray by the door. He picked up a bottle of ibuprofen on the second drawer of the tray before looking at the first level of the tray.

"Will?" I said as the boy stood, frozen. The bottle slipped out of his hands and rolled forward, stopping at the corner of the room. This caught Annabeth's attention who stopped sanitizing up the medical equipment and walked over to him.

"Will, what's wrong?" She asked and the son of Apollo looked at her. I didn't see the look on his face but Annabeth stumbled backwards, shocked. Will bolted out of the infirmary and I immediately sat up, ignoring the dull ringing in my head.

"The blood. It's gone." Annabeth said and my gaze fell on the medical tray. It was empty.

"Katie." We both said at the same time then rushed out of the door. By the time we made it to my tree, Will was there and the three of us watched Katie dart past the beach, carry the crimson filled bag and when I blinked, she was out of sight. There was no point in trying to catch her-she'd be long gone before we even got close.

"I don't understand, they made the virus. They should have the antidote, why do they need your blood?" Will said, exasperated.

I ran two hands through my hair, cursing myself repeatedly. This was it-the second layer of Percy's plan. He found a blind spot-while we were all distracted with the virus, he had commanded Katie to steal my blood, knowing that we'd use it as the cure. It was all an illusion-Katie had been under their spell the entire time, that's why her eyes were still cloudy. It felt like the rug had been pulled out from underneath us and that nothing we were doing had fixed anything, it was only damage control.

Letting the tears fall freely now, I slumped against my tree for support. The moonlight seemed to mock me, putting a spotlight on me. "The virus was meant to destroy us but it was also a distraction. While our guard was down, Katie stole my blood. I hope to the gods that I'm not right but I know I am. My blood is the last ingredient..."

"The last ingredient to what?" Annabeth demanded, imploring me to continue.

I squeezed my eyes shut. "The last ingredient needed to sever the bond between Percy and I. The next time we see Percy, he won't be himself. He'll be Kronos."

A/N-So we're inching closer to battle. I think after next chapter, we'll skip to December and shit will really hit the ceiling. Updates are once a week on Sunday and I'll see you guys then!