Mabel looked out at the dock nearby, and realized where they were. "Wow…this is where Mermando left to go home. I wonder how he is."

Dipper rolled his eyes. "Um—so, what now?"

"Now, we salvage parts offa this thing and fix the Milano. "Rocket said. "We were trying to figure out how t' get home before the Collector came and screwed things up. "

"Rocket, we already got parts to fix the Milano." Gamora reminded him.

"Yeah—right—a lot's happened in the last twelve hours or whatever it's been, okay? "Rocket's eyes widened a second. "Hang on."

He raced back to the collector's ship and went through the hole Gamora had made by ripping off part of the ship's side.

"Well, when he gets back, we do need to go and fix your ship." McGucket said matter-of-factly.

"But Dr. McGucket, you're in no shape to—" Gamora started.

"Young lady, I'm just fine. I only need one hand to hold that torch. "

Gamora glanced at Quill, who mouthed, "Don't argue with him," and simply nodded.

"What about you, young man?"

Dipper looked up at Drax, realizing that the muscular green Guardian was talking to him. "I'm going with you guys. "

"Now, son—" McGucket started.

"Please, sir." Dipper said, looking the older man right in the eye. "I can't miss the Guardians leaving. "

Quill raised an eyebrow. "Well, provided we –"

"I got it!"

Everyone looked to see Rocket come running out of the ship, a sphere of glass with wires attached to it in his paw.

"What's that thing? " Mabel asked.

"This, my young Earth friend, is the device that the Collector used to open a portal and send us all back in time. "

"Sweet." Quill said with a smile. "Well, let's get moving."

Drax made a move to pick Dr. McGucket up, but the older gentleman took a step back. "Ah-ah. It's my arm that's broke, not my leg. "

"Very well then. "Drax came over to Dipper and picked him up. Dipper wasn't about to argue. His head hurt, but there was no way he was leaving everyone now.

The group made their way around the lake, trying to stay in the trees so that they wouldn't be seen. Going this way took a couple of hours, but finally:

"Ah, there's my baby." Quill said at the sight of the Milano.

"I'll go see where I can install this thing." Rocket said, taking the globe device he'd taken from the collector's ship and heading for the Milano's cockpit.

McGucket walked straight over to his welding equipment, ready to go. "Miss Gamora or Mister Drax, could one of you bend this here metal so that's it's in the right place afore I weld it? "

Drax set Dipper down by a tree. "I shall."

Gamora glanced at him. "I could do it."

Drax came over and picked up the metal sheet they'd gotten in the junkyard. "I know, but you have already shown your prowess with the Collector's ship and freeing the lake creature. Now it is my turn. "

Gamora rolled her eyes. "Men."

Dipper watched as Drax easily bent the metal they'd found around the damaged part of the Milano. Dr. McGucket set to work.

Mabel came over and sat by Dipper. "Dipping sauce, are you okay? "

Her brother winced at the pain shooting through his head. "My head is killing me—but I can't just go off to the hospital and not see the Guardians leave."

Mabel nodded, though she felt a little sad.

Dipper noted the frown on her face. "What's wrong?"

Mabel sighed. "Aw, it just seems like we make new friends and they have to leave—or we have to leave them. "

Dipper had to smile. At home, before they fell asleep at night, Mabel would always talk to Dipper about this creature or that creature or this incident or that incident that they had met/had happened in Gravity Falls. He had to admit, Piedmont had been a "little" boring after the previous summer.

"I know it's hard, Mabel," Dipper said, wincing at a pain that shot through his head. "But—saying goodbye is part of growing up, remember? "

Mabel sighed. "Yeah, but it's still hard. "

"And there it is. " McGucket said, stepping back from the Milano's wing and checking over his work. "It'll need some time to cool."

"It will cool. Space is pretty cold." Quill assured him.

Just then Dipper and Mabel were rather surprised to see Drax get on one knee in front of them.

"You two are some of the strongest warriors I have ever seen for your age and size. And you—" Drax focused on Dipper, "—are quite the strategist."

Dipper gulped. "Uh—thank you. "

Mabel blinked. "Wow—warrior? Thank you. "

"I am Groot." Groot said, placing a large hand on McGucket's shoulder.

The older man looked up at the tree creature, and thought his eyes looked a little sad.

"Aw, shucks, Groot—I'll miss you, too. I'm glad you folks dropped by—even if it was a mistake."

Gamora nodded. "Of course, thanks to Quill, it was—"

"Hey—"

"—but—as I've heard him say, this time it seemed to be a 'happy accident'. "

"I will be happy when we get back to our own time." Drax said. Dipper and Mabel wondered if Drax ever looked happy.

"Whelp, it's done."

Everyone looked to see Rocket hop out of the Milano's cockpit.

"Time to go." He said.

"Well, kids, it's been nice knowing you." Quill said, coming over and getting on his knee as Drax had. "You're both really awesome kids. I'll always think of you as Guardians. "

Both of the twins' eyes widened.

"Whoa…"

"Wow—thank you. "

Quill got up and turned to Dr. McGucket. "You too, sir—if you don't mind my saying. "

McGucket shook his head and smiled. "I certainly don't, son." He said, extending a hand. "It's been nice knowin' ya. "

The leader of the Guardians took McGucket's hand and shook it firmly, then waved to the twins and joined the others in the Milano.

"Okay, Rocket, fire this thing up!" he said as the cockpit closed.

McGucket stepped back as the Milano's thrusters fired up. In front of the ship, a hole appeared, swirling with rainbow colors.

Above the noise, the twins and McGucket could barely hear Quill say, "Hey, it worked !"

To which Rocket replied, "Of course it worked, for crutack's sake! "

With that the ship lifted off of the ground and disappeared through the swirling hole, which closed behind them.