Disclaimer: I don't own Big Time Rush.

Chapter One

Carlos awoke with a throbbing headache, although the appropriate name would be a migraine. He grunted, looking around, flinching when his neck gave off a horrible pain. The scene in front of him looked anonymous, but there was a twinge of a vaguely familiar atmosphere to it. Carlos went still, letting his thoughts drift; a faint-coloured image popped into his mind and he suddenly remembered…the rain, the lightning, Logan's voice sounding helpless…the fierce yet numbing pain when the trees came upon them.

His heart leaped when a mental photograph of Logan's frightened face wandered into his mind; Carlos cringed at this, and blinked, earning a guilty sensation. Not wanting to feel it anymore, he resumed looking, analyzing the weird instruments that were by and attached to him. A soft click was heard, and Carlos' head immediately jerked to the front door, watching with confused eyes as Mrs. Knight, Kendall, James and Katie came in one by one.

Tears were filling Mrs. Knight's eyes as she hugged Carlos. Reluctantly, she pulled away and smiled at him, backing away so Katie could get the chance to hug him also. Then it was Kendall and James' turn; they didn't hug him, though, but instead Kendall squeezed his hand in his and James looked at him, anguish evidently showing in his eyes. Carlos kept his eyes glued to the two boys in front of him.

"You feeling okay?" asked Kendall, tears threatening to spill out, but he sniffed, abstaining from letting the salty drops fall from his already-red eyes. Carlos nodded.

"You sure?" asked James, frantically squeezing his other arm.

Carlos opened his mouth, "Yes. I'm–" His eyebrows gradually furrowed when he heard voice, which had a different pitch to it, sounding different. "Um, is Logan okay? Where is he?"

Kendall knocked gently on his head. "What are you talking about?"

"Sweetie, he just woke up. He's confused," said Mrs. Knight to Kendall. "Logan, do you want us to leave so you can rest longer? Don't worry. We'll wake you up—if you fall asleep—when Carlos wakes up. I promise he'll be okay."

Carlos choked on his saliva. "W-what? I'm right here! I'm fine, with a huge headache, but I'm okay!"

Katie stepped in between Kendall and James, staring at Carlos with a raised eyebrow. "Did one of the trees hit you on the head with one of its branches?"

Carlos scowled. He fumbled around on the bed, pushing the heavy blanket off him, and then his eyes grew wide when he spotted pale skin on his arms and legs.

"What the…?"

Quickly, he struggled to remove all the unknown items from his body—ignoring the slight sting when he gawkily took out a needle from his arm—and he stood up, throwing the door of the bathroom open. The splitting headache continued to grow when, instead of his own face, he saw Logan's. His heart started to beat in a frenzied manner when he made faces and Logan's face mimicked, each movement perfectly copied.

He opened his mouth. "Testing, one, two…" Carlos trailed off, finally recognizing his weird new voice as Logan's. "What the heck!" he shrieked.

Turning around almost too quickly, he almost tripped, but managed to exit the bathroom without breaking an ankle.

Carlos gulped, looking at everyone with dilated pupils. "Is today Opposite Day…?"

"Nope. It's still Saturday," answered Katie.

"Well, we're going now, Logan. We have to check if Carlos woke up, too," said Kendall.

Everyone waved him goodbye as they exited, and seconds later he was left there alone, ultimately dumbfounded. Trembling lightly, he desperately tried to get used to the…astoundingly odd problem—or body, he should say. So as an experiment, he slowly stroked his new skin, gulping at its softness and milky-white colour. Soon enough, Carlos was transfixed in this continuing pattern, and the migraine had seemed to magically fade away.

"So soft… Mmm…"

ooo

There was a soft continuing beep that made Logan moan, stir on the bed, and wake up from his numb sleep. He stretched quirkily, and stopped when a ray of pain shot through his back. As his head suddenly collapsed on the pillow, a flashback ran racecar-speed through his mind. His face went gravely hot as Carlos' inevitable scream rang in his head; the trees had been worse, but he currently refused to make any contact with those wretched images.

"Man…" His eyes shot wide when he heard the odd, husky tone of his voice.

The brunette tensed for a second, deciding it was the effect of being affected that made his voice like this. After all, he had been coughing out bloodwhich was never a good sign, and it was clearly hinting that he will be coughing later like the sickest llama in the world. Logan sighed loudly, partially irritated because all of this wouldn't have happened if Carlos would have obeyed him; out of all the stupid (yet sometimes effective) buffooneries the raven committed in the past this had to be one of the most ridiculous and unreasonable ones. Who in their right mind would go out in a horrible storm?

Carlos. That's who.

And Logan couldn't help but slap himself mentally, thinking that Carlos would actually follow his orders in a time so unpredictable…especially when it involved lightning and falling trees. Yeah. Totally unpredictable.

And now he was in, what he believed, a hospital. Carlos was probably in another room escaping through a window by now, completely unaffected.

His thoughts were deprived from him when the front door opened, and in came James and Kendall. Sad smiles languidly sunk on both their trembling lips as they made their way towards Logan's bed.

"We were so worried," said Kendall, and then he grinned. "My mom and Katie are out getting some food right now. If you're hungry, you can eat when they bring the food. Corn dogs, especially for you," he said, ending his words with an earnest wink.

James said nothing, looking at Logan right in the eye, giving him a look that clearly screamed out that he was overwrought. His lips parted, and the smile dissolved. "Carlos, I am so, so sorry. I should have stopped you instead of letting you go out there. Don't blame Logan for this." He sighed. "Just call me a jerk, I deserve it. I'm the biggest jerk for ever letting you do stupid stuff. I mean, I do stupid stuff, too, but your pranks are sometimes out of my league, dude." He chuckled weakly at his own remark.

Logan's eyelids fluttered rapidly, and then he looked at James with a puzzled expression. "Um, James, Carlos isn't here…" He bit is lip as he heard that same different tone to his voice.

He almost thought it sounded exactly like Carlos' voice. Maybe, instead, that lighting had given him voice-mimicking powers…or maybe not. It was like saying that a person fell into a river full of toxic waste, and then they spontaneously gained superpowers; the only thing that would happen is that they would get their skin peeled off. And being able to peel your own skin off would be a very painful superpower.

James scowled while Kendall spoke up, "Carlos, did something happen between you and Logan before…you were hurt? You two seem to have the same behaviour…"

James' eyebrows continued to crinkle down. "Is this some sort of plan? To confuse me?"

"No…" answered Logan in that same husky voice. "I…I need to go to the restroom."

His eyes dropped down to the blanket that was on him. Kendall and James took off the hospital strings stuck to him, and led him into the bathroom. As Logan entered the small bathroom, the abrupt pressure in his bladder was soon gone when he caught sight of black hair in the mirror. Gradually, he turned to face the mirror, and saw three people in the reflection. Kendall was standing on the left while James was on the right. Logan thought he had gone crazy when he saw Carlos in the mirror. A spark ignited in his brain, and he let his vision carry itself to his arm. He blinked several times while wiggling his fingers, studying the colour of his skin tone: caramel—just like Carlos'. The exact…same…colour.

It took a few seconds, but he finally realized something scary. Something scary that was the answer to his new voice.

He wasn't himself any more. Not physically, to be more specific. But analyzing this thought and all its loopholes would probably burn all his brain cells, since it was far too complicated for even the smartest scientist or doctor to comprehend, so instead he turned around to stare at his two friends who were still standing by the entrance of the bathroom, waiting for their short friend to close the door. Sheer shock was written all over his eyes.

Logan's mouth went dry.

His?

More like Carlos'.

ooo

Carlos was jittery when the door opened again. Mrs. Knight and Katie came in—James and Kendall were missing. "We brought you some food…if you're hungry," said Mrs. Knight, placing a paper plate full of food on Carlos' bed, whereas the teenage boy just stared at it.

He looked up at Mrs. Knight, sticking his bottom lip out. "No corn dogs?"

The mother's face contorted into a look of surprise. "We bought some, but they're for Carlos…" She then smiled. "But you can take one."

Carlos' appetite vanished as quickly as it came. "Mrs. Knight, I'm right here. I'm Carlos."

"Logan, you've really gone nuts," said Katie as she sneaked a chicken nugget from Carlos' plate, and popped it into her mouth, chewing quietly.

"My name is not Logan!" cried Carlos. "You've gone nuts!"

Mrs. Knight bit her lip, looking worried. "Logan, honey, calm down. If you're saying that because you're worried about Carlos, I assure you he's fine. Kendall and James called me and said he's awake. Thank God someone saw you and called the ambulance. The trees surrounding the area had been fairly little so it didn't impact your body horribly. But you and Carlos are still going to rest when we get home today; you two could be sick from the rain."

Carlos recalled when Logan was trying to persuade him to return home; the brunette had been coughing up blood. Not spit, not mucus, not any other substance that lingered in the human mouth or nose, but blood. And as crazy as the Latino was, he's never had a liking for blood—no matter how many times he's seen it (either on him or another person, not counting the bloody scenes on television shows and movies). The point was, he didn't hate blood; it was just a semi-neutral feeling he had for it.

Carlos groaned inwardly as he found himself thinking that even though he was literally in Logan's body (and it was extremely awkward thinking it)—the smartest one of the whole group—he still got sidetracked in his own mind. It was bizarre, yes, so the Latino quickly changed the subject in his thoughts, deciding to choose something clean and actually helpful.

"Mrs. Knight…what…room is Lo–" He immediately went silent, still trying to get accustomed to the eerie situation. It wasn't every day that he switched bodies with one of his best friends. "What room is…C-Carlos in?" He flinched internally.

Mrs. Knight smiled. "I'll help you…"

Her words faded away from Carlos' hearing when he saw Katie holding up her hands, forming the numbers one, zero and six with her fingers.

Carlos beamed. "Gotta see Logan now!" he shouted as he jumped off the bed, and ran out of the room like prey running from its predator.

He stopped abruptly when he saw a map on a wall, noticing he was on the same floor as his friend's room. Carlos sprinted, and stopped dead in his tracks when he saw the numbers Katie had silently given him. He was about to reach for the doorknob when someone grabbed him from the back collar.

"Mrs. Knight!" exclaimed Carlos as the mother dragged him away from his targeted room.

"What has gotten into you?" Mrs. Knight questioned as she pulled Carlos further away from Logan's room. "I expect this type of behaviour from Carlos, but you?"

"No! Mrs. Knight, please!" Carlos thrashed around, but gave up once he knew there was no escape from the woman's surprisingly strong hold.

"The doctor is asking for a random checkup. Lighten up! This'll be a good time for you to learn more doctor stuff, Logan," said Mrs. Knight, grinning, as she opened the door of Carlos' room, and pushed the boy in.

Katie was leaning against a wall in a corner, entranced in one of her endless video games as a short woman stepped in front of Carlos, smiling widely. "Hello, Logan Mitchell, I am Doctor Lee. I'm going to be running some tests on you today to see if you're doing fine."

Carlos instantly pouted. "I don't wanna be checked."

The doctor giggled. "How adorable. Sit down on the bed, please, so I can start. The sooner I finish the faster you can get back home, okay?"

Carlos continued to pout as he sat on the bed, shuddering when the woman lifted his hospital robe, feeling the round, cold metal part of her stethoscope grope his new chest.

ooo

"Carlos. Carlos! Wake up!" yelled Kendall's voice.

Logan awoke groggily, feeling the cold of the floor seep through his fingers. "W-what happened?" He ignored the knots that formed in his stomach when he spoke, twitching at his (Carlos') voice.

"You…fainted," answered James as he helped the boy up.

Logan blushed and made his way to the hospital bed, being carefully watched by his two friends. "Carlos…are you okay? You're kind of quiet, you know. Not your usual self… Like jumpy and crazy…" said Kendall.

Logan ignored him and instead stared at his hands, partially intrigued, partially freaked out. He admired the caramel skin tone, rubbing his hands together. He knew Carlos always did rash acts, so he wasn't quite surprised when he felt the fingertips, of which were severely dry. He didn't favour dry skin that much. Logan decided he was going to have to look for some lotion when he returned back home. It sounded fruity, but hey, if he was going to be a doctor someday he had to worry severely about his health.

"I'm…fine," answered Logan.

Kendall smiled. "Logan woke up a few minutes ago. You guys are lucky that the trees hadn't split your spines in two."

Logan sniffled, and then he sneezed.

"But you're not so lucky that both of you got sick," added James, giving Logan a cocky look.

"Um…do you guys notice anything different about me?"

Kendall and James smiled. "We thought you might say that."

"Aside from your weird personality right now…" said James as he reached behind a chair and Carlos' helmet was revealed. He grinned and gave it to Logan, placing it on his lap. "Be grateful that I found it. I even dried it for you."

Logan stared down at the helmet. "This belongs to Carlos," he said softly.

James raised an eyebrow. "Um…yeah, it belongs to you." He shifted his glance to Kendall, who shrugged in return.

"No." Logan frowned. "This helmet belongs to Carlos. I am not Carlos. I'm Logan." He breathed heavily, realizing how crazy this situation was. He was in Carlos' body. And that probably meant that Carlos was in his body. "My body's gonna be broken by the end of this week," he groaned, mostly talking to himself.

Kendall laughed. "You always have a broken body, Carlos."

James nodded with raised eyebrows and a smile, showing that he agreed.

Logan shook his head slowly—Carlos' head to be anatomically correct. "Not me. Logan. Oh, God." He moaned, flustered and annoyed, and pulled the blanket over his head. "I'm going to sleep. Wake me up when this nightmare is over."

It was not until then that he noticed weird figures on the inside of the blanket. He gradually pulled it off, noticing that they were fat clouds with stupidly-cute smiling faces, each carrying a multicoloured lollipop, surrounded by a baby blue background.

"I brought it for you…since it's, you know, your 'lucky' blanket," said James, a bit embarrassed, as he received a friendly shoulder bump and a smile from Kendall.

Logan raised his eyebrows. He never had known Carlos had a 'lucky' blanket. Then again, the Latino was ridiculously superstitious, so it made sense that he labeled a silly thing as a source for good luck.

Gradually, he brought a corner of the thick blanket to his cheek, and rubbed it along his new caramel skin.

It was soft; so soft. In fact, it was extremely soft that he now knew why Carlos was always talking about clouds and fluffy kittens. He wondered if this is what Carlos thought clouds felt like; like this blanket.

Logan sighed happily as he continued to grope the gentle fabric, and his eyelids fluttered closed. The blanket had seemed to put a trance on him because he didn't hear when the front door opened for the second time.

"Logan?" Kendall and James exclaimed at the same time.

"Huh?" Logan opened his eyes, and almost yelped when his own body jumped on him with wide eyes while sucking on a tongue depressor, making Carlos' helmet land on the floor with a loud thud. Logan blinked. "Carlos…is…that you…? U-uh…in…side?"

All he wanted was a simple yes.

Instead, his own voice shouted in front of his face, "Oh, my God, Logan! You gotta try this thing, it tastes like blueberry! It's so good!" And the tongue depressor was shoved in his mouth.

Maybe it should've been awkward. But since the stick came from his own mouth, coated with his own saliva—even though Carlos was still in his body—he really didn't mind. Plus, Carlos was right. It did taste like blueberry.

"Oh, my lucky blanket!"

Logan snapped to attention and growled loudly, snatching the cloud blanket from Carlos. "Mine!" In effect, the Latino began whining angrily.

Meanwhile, in the background, Kendall and James had on stupefied faces, trying to make sense out of what was currently happening between their two friends.

A/N: Okay, so if you're still confused just remember this: Carlos' mind is in Logan's body. Logan's mind is in Carlos' body. That's how I'll be referring to them through the whole story.

i.e. Logan is still referred as Logan, the only thing different is that he's in Carlos' body, and Carlos is still referred as Carlos, the only thing different is that he's in Logan's body.

Don't worry, it kinda still confuses me, too, haha. xD