- Our adventure across the multiverse begins, brother. We are going to track down your alternate counterparts and stop them from destroying the entire galaxy. We can do this, together.

Lisa opened a portal to the universe O-017. The Earth in this dimension resembles a cracked combat helmet with grenades and missiles flying by.

- Uh… It's a… Planet?... - Lincoln asks, staring at the display.

- The Earth's appearance can vary in different dimensions. - Lisa explains. - Now let's go, we have a Lincoln to find.

Lincoln and a drone Lisa sent go through the portal to a desert with a military base nearby. Some recruits were going through training at the obstacle course.

- Alright, here's the plan: we sneak into the base, track down Lincoln and obliterate him! - Lisa explains.

- Oblitewhat? - Lincoln asked in confusion.

- Ugh… Kill him.

- K-kill him?! Wouldn't that be a crime? - the white-haired boy said, shaking.

- If we're in a different universe, it's not. Trust me, i dealt with this before. We just need to…

Right before Lisa could finish, she was interrupted by a harsh, but a young sounding voice.

- Hey, why ain't you at the obstacle course, rascal? - Lincoln turned around and saw himself, in the military form.

- There he is, Lincoln! It's Sgt. Loud! - Lisa whispered to Linc. - Seems like he toughened up since he went traveling across the multiverse.

Sgt. Loud stepped over to him, looking at him suspiciously.

- Hm… Something's odd about you… you look just like me, only… Weaker. Well, nothin' like the good ol' exercise can't fix. Whip yourself a uniform and to the course with the others, now!

Lincoln wanted to object, but had no other choice but to go.

- You have to do this, Lincoln. We can kill him after you complete the course. - Lisa said. - You're a brave kid. I mean, brave enough to actually go with me.

The boy went to the obstacle course and became dumbfounded after seeing a huge ladder in front of him.

- This is Jacob's Ladder, brother. - Lisa explains. - You have to climb it and then go down the other way.

- There's NO WAY i'm climbing there!!! - Lincoln panicked. - Don't you know i'm acrophobic?!

- I didn't. But now i know you know such complicated words.

Lincoln sighed and started climbing on top of the obstacle, panicking with each try. Soon enough, he completed the obstacle after 20 minutes.

- Wow, took you long enough. - Lisa sneered. - Let's go to the next obstacle.

Linc went to the rope climbing obstacle.

- Looks simple enough, right? - Lisa asked, as Lincoln tried to climb it, only to immediately fall down. - Yeah, it's not for you.

Many hours passed, and Lincoln, tired and exhausted, was completing the last obstacle course, falling on the ground.

- Lisa… Why couldn't we just kill him before he made me climb this stupid obstacle course?... - Lincoln asked, out of breath.

- Well… At least you did some exercise. - Lisa said calmly.

Sgt. Loud came towards our Lincoln, stopping the timer.

- 4 hours. Pathetic, Loud, pathetic. And you think you can become an actual soldier? - O-017 Lincoln complained. - Even the others completed the course faster than you did by… An hour. Not a lot, but it still shows that you need more exercise!

- HOW ABOUT YOU GO TAKE A HIKE AT THE MINEFIELD?! - Lincoln snapped, throwing his counterpart to the aforementioned location, where he exploded in pieces.

- Wow. I certainly didn't realize you can be this tough. - Lisa marveled.

- Looks like these obstacle courses did teach me something after all. Alright, where to next?

- Universe B-016.