Somewhere in a forest clearing, two trainers, Lucas and Brendan, are in the middle of a Pokémon battle.

Brendan: "Swampert, use Double Edge!"

Brendan's Swampert: "Swampert."

Swampert begins charging.

Lucas: "Gallade, use Safeguard."

Lucas' Gallade: "Gallade."

Gallade's eyes glow light blue and a light blue barrier appears around it and it braces itself. Swampert hits Gallade full force into a tree.

Lucas: "Gallade! Are you ok?"

Gallade gets back up and does a fighting stance.

Lucas' Gallade: "Gallade."

Lucas: "Alright!"

Brendan: "I'm impressed. Your Gallade's much tougher than it looks."

Lucas: "Thanks you. That's because I trained him hard and well, just like my other Pokémon."

Brendan: "Well, the battle isn't over yet." (To Swampert) "Use Hammer Arm!"

Swampert charges to Gallade. One of its arms glows white and gets ready to slam Gallade.

Lucas: "Block it."

Gallade reacts just in time; it blocks Swampert's Hammer Arm by crossing its arms above its head a split second before the attack made contact. Brendan is stupefied but becomes slightly annoyed.

Lucas: "Good job! Now, use Leaf Blade."

Brendan: "Uh oh."

Both of Gallade's arms glow a light green and gives Swampert a fury of slashes. Swampert is knocked back and falls on its stomach.

Brendan: "Oh! Come on, buddy. Get up. You can do it."

Brendan's Swampert: (groaning) "Swamp."

It took much effort, but Swampert managed to get back up on its feet.

Lucas: "Hey, Brendan, I'm ready to call it quits if you are."

Brendan: "What, me? No way. Swampert, use Mud Bomb!"

Swampert fires a glob of mud from its mouth at Gallade.

Lucas: "Gallade, return to sender."

Gallade grabs the Mud Bomb and chucks it back at Swampert, hitting its face. Swampert is temporarily blinded by its own attack. It tries to shake the mud off and then it rubs it off.

Brendan's Swampert: "Swamp." (After it wipes the mud off its eyes, confused) "Swampert?"

Gallade used Double Team while Swampert was distracted. It feels a little overwhelmed by the clones.

Brendan: "Swampert! Don't be fooled. They're not all real!"

Brendan's Swampert: "Swamp. Swam-swampert."

Brendan: "Use Muddy Water to determine where the real one is. Go!"

Swampert releases a powerful blast of brown, muddy water from its mouth at the illusions, until there were no more. Brendan realized that something wasn't right; Swampert hit the double teams, but the real one wasn't there among its duplicates.

Lucas: "Teleport."

In a glowing, multicolored silhouette, Gallade suddenly appears of Swampert's back.

Brendan's Swampert: "Swamp?"

Brendan: "Oh, crud."

Lucas: "Bet you didn't see that coming. Gallade, use Future Sight!"

Lucas' Gallade: "Gal."

Gallade closes its eyes for a moment; it sees an image of an Onix whirling around in the sky and another of the same Onix over the clearing that it, Lucas, Brendan, and Swampert are battling. It quickly opens its eyes and lets out a panicked gasp. Lucas is concerned.

Lucas: "What's wrong, Gallade?"

Brendan: "It probably saw a vision of itself getting thrashed and losing to ol' swamp here."

Brendan's Swampert: "Swampert."

Lucas: "No. Gallade definitely saw something when it was using Future Sight."

Lucas' Gallade: "Gallade, gallade."

Gallade points up to the sky. The rest all look and see something—a curvy line—getting bigger.

Lucas: "Something that is coming this way!"

The trainers and their Pokémon (Gallade, still on Swampert's back, rides him) clear out of the clearing and in the forest behind the trees. The Onix with no horn crash lands and slides on the forest clearing. Lucas, Brendan, and their Pokémon peer from behind the trees and see the Rock Snake Pokémon, semi-unconscious and in pain from the impact of the fall. They rush out to help it.

Lucas: "Oh my god. It's an Onix!"

Brendan: "I know it's an Onix; so do you." (Noticing its missing horn) "But what happened to it and how did it get here?"

Lucas: "I don't know, but it's in pretty bad shape. We got to take it to the Pokémon Center, pronto."

Gallade and Swampert walk up to it, slowly. Onix, thinking it's being attacked, lifts its head up but drops it back down because of the excruciating pain.

Lucas: "Gallade, Swampert—get back."

They do exactly that. Lucas turns his attention to the hornless Onix.

Lucas: (calmly) "It's okay. Calm down. You're going to be okay. I promise."

Lucas takes out a Pokéball and catches the rock snake by tapping the ball on its head.

Brendan: "Okay. Now we just need to know how it got here."

Lucas: "Like I said, I don't know how. It must've come from the mountains somewhere."

Brendan: "And where is that, exactly?"

Lucas: "If we can get a better view from the trees, we can find it."

Brendan: "I think I got someone who can help."

He takes out one of his Pokéballs, condensed into its smaller size; he presses the button in the middle to convert it to its full size. He opens the Pokéball and the energy form released materializes into a Shiftry.

Brendan's Shiftry: "Shiftry."

Brendan: "Shiftry, I need you to climb up those trees and see if you can spot any mountains. If you can, tell us where."

Shiftry nods.

Brendan's Shiftry: "Shiftry."

Lucas: "Go with him, Gallade."

Lucas' Gallade: "Gallade."

Shiftry and Gallade then jump from branch to branch until they reach the top of the emergent layer. Both look around until they see mountains and a small figure flying away from there. The Wicked Pokémon and the Blade Pokémon jump down, branch by branch, and point to their trainers where the mountains are.

Brendan: "Thanks Shiftry. Now, return."

Brendan returns Shiftry to its Pokéball.

Lucas: (to Gallade) "You ready, buddy?"

Lucas' Gallade: "Gallade."

Lucas: "Good, then let's go."

Gallade teleports itself, Lucas, Brendan, and Swampert to the mountains. They materialize on a rocky path where they come upon a shocking sight: various Pokémon lying on the terrain, the cliffs, and the mountainsides, groaning and in critical condition. They walk around, looking at the injured creatures and becoming devastated.

Lucas: "My god!"

Brendan: "That must've been some battle they had earlier. What kind of Pokémon was strong enough to take them all down?"

Lucas finds a pair of eyeglasses while walking aimlessly. He picks them up and puts them in his pocket. Swampert turns its head to the left and notices something.

Brendan's Swampert: "Swampert."

Brendan: "Swampert? What is it?"

The Mud Fish Pokemon leads the others to what he saw. They stop to find two giant footprints imprinted in the ground.

Lucas: "Footprints?"

Brendan: "Looks like it but these are too big to belong to a normal person."

Lucas: "Agreed. From heel to toe, it's as long as a Squirtle's shell."

Brendan: "Well, whosever feet they belong to, it looks like he/she didn't survive the disaster that happened here."

Lucas: "I wouldn't be so sure."

Brendan: "What do you mean?"

Lucas: "This is silly, but I have two theories. Either this man survived being in the middle of the biggest Pokémon battle ever without a scratch or he caused the battle and won?"

Brendan: "What the heck are you saying, dude? That the man who left these prints attacked all the Pokémon in this area?"

Lucas: "Yes, only it wasn't just a man, but someone-or something-else altogether. Either way, you just helped answer your own question."