A/N: So, a while back, I was watching Treasure Planet and I thought 'whoa, that would make an AWESOME CS AU'. So, I (with the help of piratesails & jollysailorswan on Tumblr) started making an outline, and voila! Out came a short AU :) It strays quite a bit from the original, but I figured that might give it a bit more character, you know?

Anyways, if you've got any questions, let me know! I really like this AU, and I'd love to chat with some of you about it, if you want!

Enjoy!

"C'mon, Liam, you'll miss the stars!" Killian exclaimed, grabbing his older brother's hand and dragging him across the ship's deck. Liam laughed as his little brother pulled him along, then jumped up and swung his legs over the railing of the ship.

Killian smiled as his brother sat beside him and ruffled his hair.

"Where are they?"

"Just hold on, kid. They're coming." Liam smiled up to the sky.

Killian pursed his lips and waited impatiently, glancing around.

"Liam, they're late."

"Three, two, one." Liam grinned, looking to the sky.

Killian gasped as stars began shooting through the sky, just like they did every night. He looked up to his older brother, who grinned down to him.

"Pretty amazing, yeah?" Liam smiled.

Killian nodded as his brother wrapped an arm around his shoulders.

"Liam, I want to be a Lieutenant, like you." Killian spoke softly.

"You don't like being a cabin boy?" Liam teased as Killian shook his head, "It's fun aboard a space ship-what are you talking about?"

"I don't like being bored all the time. I can't even come up on deck until night time."

"You should be sleeping." Liam smiled.

"We watch the stars every night."

"I know we do. Mother would-Never mind." Liam swallowed.

"Do you think she's a star now?" Killian asked.

"Perhaps she is out there." Liam offered a sad smile to his younger brother, "Perhaps she is."

"Liam?"

"Aye, little brother?"

"Do we all get turned into stars when we die?"

Killian looked up to his brother expectantly, watching him smile.

"Aye, we do. I'll be a star someday, but you..." Liam sighed with a smile, clapping his brother's shoulder, "You'll rattle the stars, kid."

Killian smiled up to brother before looking out into the distance. He squinted when he saw a golden orb of a planet, then furrowed his brow.

"Liam, what's that?"

"Hm?"

"That... planet out there." Killian said, pointing to it.

"Oh, that? That's supposedly Treasure Planet." Liam smiled.

"Whoa, really?"

"Supposedly. No one's ever gone out that far to really know for sure."

"Why not?"

"I don't know. It's like there's some sort of obstacle people can't get past."

"We should go find it one day." Killian smiled.

"Alright-"

"Jones!" A man called, causing Liam to stiffen and turn around to see the Captain standing there, unamused.

Liam quickly turned around fully and rose to his feet, plucking Killian from the railing and setting him down.

"Apologies, Captain. We'll be off to bed, now." Liam spoke nervously.

"Aye, you will." He spoke firmly, watching as the two walked down to the sleeping quarters.

"Thanks, Liam." Killian smiled up to his brother.

"Of course, little brother. We'll do it again tomorrow night, alright?"

"Aye-aye." Killian spoke with a salute before walking to his small bunk for the night. He clambered up into it, smiling as Liam tucked him in.

"Goodnight, Killian." He smiled.

"Goodnight, Liam."

"Liam, wait!" Killian called out before pressing his palm to his forehead.

God, his brother was an idiot.

"Yeah!" Liam beamed as the ship zipped in between two larger frigates with ease.

Being his brother's lieutenant was much harder than Killian expected.

"You're going to get us killed!" Killian called out as he walked towards his brother, at the wheel.

"Oh, c'mon, you're just being a worry-wart, as always." Liam teased, "Besides, we're on a mission for the King-we must be swift."

"I'd hope so. He's some sort of creature that could probably eat a human, if he wanted." Killian grumbled, taking the few steps to reach his brother's side.

"Well, we'll be spared. This 'dreamshade' we have to get is close to a place I've only dreamed of." Liam beamed, "We might be able to find it."

"Treasure Planet?" Killian whispered.

A crewman-Rumplestiltskin, Killian thought his name was-glanced up to them, then started staring, as if he'd heard the perfect word.

"Let's take this conversation below deck, aye?" Liam asked softly, glancing to the man and motioning for Killian to follow him down to the Captain's quarters.

Killian followed obediently, stepping down the stairs carefully.

He watched Liam walk to the one locked cabinet and unlock it, taking something from it.

"A sextant." Killian deadpanned, crossing his arms over his chest and raising a brow.

"Aye, but it's not a regular sextant, little brother." Liam grinned, earning a groan from Killian at the ridiculous moniker, "C'mere."

Killian sighed and walked to stand on the other side of his brother's desk.

"This sextant," Liam smiled, setting it on the table and pointing to it, "This sextant could take us to Treasure Planet."

"Why don't we just go there, then?" Killian asked.

"Because, little brother," Liam said, "Like I said, it is very dangerous, and takes a specific crew to do it correctly and safely. We don't know what's there."

"Isn't that why we should go?"

Liam smiled and clapped a hand on his brother's shoulder.

"First, let's get this item for our king. Then, we can talk about Treasure Planet again, aye?"

"Aye." Killian grumbled.

"Now, go up top and make sure everyone's ropes are secure. We don't want to lose anyone to gravity once we hit high speed soon." Liam smiled.

"Fine." Killian said, retreating back to the top deck.

"Alright, men!" He called out, "Brace for high speeds ahead! Secure your ropes and help your brothers out with theirs!"

Killian went up to the helm to look out at the horizon, only to realize there was a large meteor-type object headed their way.

Damn it.

He groaned as he tried turning the wheel quickly, the ship breaking into chaos as the men scrambled to get their ropes tied. Liam came up from the cabin, looking to Killian.

"Liam, get your ropes tied, please!" Killian called out.

"I'm working on it! Are yours?"

Killian rolled his eyes and hurried to the mast, quickly tying his and checking Liam's as they went along.

"Man the helm-I'll make sure no one's lost!" Killian called, earning a nod as his brother hurried up to the helm.

Killian hurried around the ship, grabbing onto the mast as the ship teetered to the side. Every rope seemed to be tied, but Killian knew he had to check and double check.

"Killian! There's a problem in the quarters!" Liam yelled across the loud ship.

"What?"

"Make sure that sextant doesn't leave my quarters!" Liam shouted, to which Killian nodded. He ran across the ship and down into the quarters, making sure that the sextant was still there.

In that moment, the ship turned sharply, making Killian nearly skid across the floor. He grabbed onto the desk and prepared for impact, closing his eyes and waiting.

Nothing.

He stood up straighter, glancing around.

The ship seemed to have leveled out, so he carefully put the sextant back in its spot and went up to the deck to find Liam.

"Liam?" He asked, glancing around.

The crewmen were helping untie each other as they coasted, making Killian furrow his brows.

Liam wasn't up at the helm.

"Where is Captain Liam?" Killian demanded, looking out to the crew.

"He was lost, sir." One of his men said, taking off his red beanie and holding it over his heart.

Killian swallowed hard, clenching his jaw.

"It seems as though his rope wasn't tied." Another man said.

"No, no, that's not possible, I double-checked his." Killian spoke quickly, walking down to the mast and looking to see every rope tied, but one.

"Liam." He breathed, tears coming to his eyes as he picked up the shred of rope he had left of his brother's.

He bit his lip before rising to his feet.

"I am your new captain now, men." Killian spoke firmly, swallowing his tears, "You will do as I say, as you would have Liam. And, we are no longer a part of the Royal Navy. We are now pirates, men!"

"Captain Jones!" His men began to chant. Killian took a deep breath and looked to his crew as he tore off his Naval jacket, tossing it into the abyss. As he glanced around, he noticed one man in particular was not on the ship-Rumplestiltskin.

That shady man had to have been the one to kill his brother. Killian knew Liam's rope was tied tight, and it was odd that aside from his brother, there was only one, shady man missing.

That's why Liam made him go down into his cabin to protect the sextant.

Rumplestiltskin wanted it, and was willing to kill for it. When he couldn't get it, he fled.

Well, Killian thought, he'll have to run pretty damn fast to outrun me and my vengeance.