In the Loud house, a rare quiet moment is shattered by a triumphant "AHA!" from Lisa's makeshift laboratory (the bathroom). She has assembled her latest invention: the "Chrono-Cognitive Infuser," a device that looks suspiciously like the blender mom said not to use, covered in Christmas lights and a satellite dish.

Lisa: "Its simple, By steeping tea leaves in a solution of ionic water and exposing them to a localized temporal field, one can, in theory, experience a heightened state of focus for ten seconds, effectively giving the user ten minutes of subjective study time!"

Lincoln: "Sure, Lisa. Just don't turn me into a baby again."

Lisa pours the glowing green "tea" into a mug. As Lincoln brings it to his lips, the family cat, Charles, streaks through the room, chasing a spider. He trips over the extension cord powering the Infuser. There's a flash of blinding light, a sound like a thousand TV static screens, and a sudden vacuum that sucks all the loose paper—and Lincoln—towards the device.

Lisa: "FASCINATING!" shouts, scribbling notes "The temporal field has manifested as a spatial vortex! My hypothesis was only 97% incorrect!"

Lincoln tumbles through a kaleidoscopic tunnel of swirling colors and random, floating objects (he swears he saw a flying bowling ball and a slice of pizza). He lands with a soft thump in a field of giant, candy-colored flowers.

He gets to his feet, brushing off his blue jeans and adjusting his now-crooked white t-shirt. "LISA!" he yells, but his voice doesn't echo. It's absorbed by the immense, weird landscape. The sky is a brighter blue, the grass is a more vibrant green, and in the distance, he sees a treehouse that looks like it's grown out of a hundred different buildings.

Lincoln: "This is... not Royal Woods."

His observation is cut short by a cheerful, high-pitched voice. "Hey, whoa! A new human! You're all... pointy and white on top!"

Lincoln spins around to find a lanky boy with a floppy hat and a sword, and a small, stretchy dog wearing a helmet. It's Finn the Human and Jake the Dog

Lincoln: "Whoa, yourself!" holding up his hands "My name is Lincoln Loud. I think I'm... lost."

Finn: grins "Mathematical! We find lost stuff all the time. Where'd you come from?"

Lincoln: "My house. My sister's science experiment went wrong."

Jake: sniffs Lincoln "Smells like... burnt toast and sibling rivalry. You're from one of those normal dimensions, aren't you? Boring, but stable. Nice."

Lincoln quickly learns that Ooo is not a place where you can just sit and wait for rescue. Before he can even fully explain his situation, Finn and Jake drag him into an "adventure."