Once again, Mewtwo finds himself being teleported to a faraway place. This time, however, is much more different than before. A warm light envelops his body and he sees images rush over him. Some images are familiar and some seem ancient, as if he is looking into the memories of the universe itself. Eventually, the images become solid and Mewtwo sees that he has arrived at his new destination. A feeling of nostalgia washes over him, although he cannot recall ever being here before.
He stands at the edge of a forest, green with life and hope. The air is crisp and fresh and the sunlight is pleasantly warm. Somehow, this place makes Mewtwo feel younger.
"Mewtwo, it's been a long time. How have you been?" a soft voice says to him.
Mewtwo turns and sees the figure that teleported him. It is the time travelling pokemon, Celebi. A gentle smile appears on her face.
"Celebi," Mewtwo says. So many things rush to mind; so many questions he wants to ask. But first, all he says is, "Hello."
The small time traveler floats over to him, still smiling.
"Mewtwo," she tells him, "you're safe now. No one will hurt you here."
Mewtwo looks around again and asks, "Where are we? Have we gone far?"
The small fairy-like pokemon lets out a small laugh.
"Well, yes and no. We have travelled far, but we are still in the same place. This is still my forest, however, we have gone back thousands of years."
It makes sense. This explains why the area seems vaguely familiar.
"Wait!" a new voice cries out. "You mean we travelled back in time?"
Mewtwo and Celebi both turn and see the young Meowth. She was accidentally teleported as well.
"Oh, my, I didn't even notice you there." Celebi tells the young pokemon. "I'll take you back home."
"No, wait," the young pokemon says, "before you send me back, I have something to say." She looks at Mewtwo with anger. "You said that the forest is your domain, but Mewtwo was the one that destroyed it! He took many innocent lives, I saw it myself! You can't possibly protect him! You should have let those golems take him!"
Mewtwo feels his anger rising at the young pokemon. He wants to say something, but knows that he should not lose his temper in front of Celebi. Instead, Celebi is the one that speaks.
"Child," she begins, "I know that you lost your home in that fire, but I believe that Mewtwo is innocent in all of this."
The young Meowth makes an angry and confused face. "What, are you saying that I'm lying? Just because I'm not a legendary pokemon like you, my words don't matter?"
Celebi remains calm throughout the transaction and Mewtwo stays quiet. If Celebi knows what really happened, he wants to hear it.
"Both of you, listen to me," Celebi speaks to Mewtwo and the young Meowth. "I am a time traveler tasked with caring for forests throughout time, however, something happened to that forest that even I cannot explain. The moment of the forest's destruction has been erased from history, almost as if somebody purposely destroyed it to hide any evidence to their involvement."
Celebi turns to the young Meowth.
"Think carefully now, child. You say that you saw Mewtwo attacking your home, but really think about it. Do you remember any specifics about the ordeal?"
The young Meowth opens her mouth to speak, but then says nothing as the realization hits her. She really cannot remember anything.
"Celebi," Mewtwo says, breaking his silence, "what do you mean that someone erased a part of history? Can't you simply travel in time to that moment and find out what happened?"
"It's not that simple." Celebi answers. "I cannot travel wherever I wish. Time travel isn't the magical act you imagine; there are rules as to where I can and cannot go. I can only travel to moments that are alive in the memories of the world. If a moment has been forgotten, then it is lost to me. It's like trying to enter a house with no doors or windows."
"Then you're saying that someone is powerful enough to erase an entire moment from time?" the young Meowth says, incredulously. "Who can possibly do that?"
"Many." Celebi simply answers.
Mewtwo, on the other hand, is thinking about something else at this point.
Someone destroyed that forest and placed me there to make me seem like the culprit. Who could have done this?
Mewtwo has many enemies among the Ageless. He fought them in their war against the humans…
"Celebi, where are the rest of the Ageless?" Mewtwo asks. "Are they all still in the Hall of Origin?"
Celebi looks at him with deep confusion.
"Why would they be in the Hall of Origin?"
"Were they not debating on what my future would be?"
Then, a look of worry and fear comes over her as she figures it out.
"Mewtwo, a year has passed since the Ageless held their debate. Do you not remember any of it?"
Mewtwo is stunned silent. A year has passed?!
"What are you talking about? How could it have been a year? It couldn't have been more than a few hours!"
Both Celebi and the young Meowth back away a bit in fear of Mewtwo's anger.
"Mewtwo, please listen to me. I was there that day. I fought on your behalf. We saved you on that day. A year has passed since then."
Mewtwo cannot believe it. An entire year has been erased from his memories. Somebody powerful is out to destroy him, but who could it be?
"I cannot remain here!" Mewtwo shouts. "Celebi, take me back to my own time! I must figure out what is happening!"
"No, I can't do that. After everything that's happened, I can't let you go back. You'll be killed." Celebi says with worry.
"Are you talking about those golems? I can easily defeat them. I am stronger than them by far."
"You are stronger, but that's not the point," Celebi explains. "You can fight them and you can defeat them a thousand times, but you'll never destroy them. Regice, Regirock and Registeel were created by humans, so in the war against humanity, Arceus tried to get rid of them, but even the great power of the Creator could not erase these beings. The word of Life was inscribed on them by humans who knew the secret knowledge of the world. They are truly immortal. You will die trying to fight them."
Mewtwo is at a loss for words. How can he fight against these immortal pokemon?
"I will do everything in my power to figure out what happened," Celebi continues, "but in the meantime, I want you to remain here where you will be safe."
Everyone remains silent as they think about the situation, but then, the moment is disturbed by a familiar sound. Heavy footsteps are heard from somewhere beyond the forest.
"No." Celebi whispers in horror. "It can't be."
Trees are easily pushed aside as three massive pokemon make their way toward Mewtwo, Celebi and the young Meowth.
"Mewtwo, for your crimes against the Ageless, you must be destroyed!" cry the mechanical voices of Regice, Regirock and Registeel.
"How did they find us?!" Mewtwo screams. "They can't travel through time!"
Celebi does not get a chance to say anything as an Ice Beam launched by Regice hits her, sending her crashing into the trees.
"Celebi!" Mewtwo screams. His anger flares and his psychic power maximizes.
The three golems fire the Hyper Beam attacks simultaneously, leveling a big part of the forest. The young Meowth holds herself and cries as the battle ensues. She has seen too much destruction and is terrified for her life. But as the smoke clears, she sees that Mewtwo is standing in front of her, holding a barrier in place that has shielded her.
"Are you alright?" Mewtwo asks.
The young Meowth remains silent. Mewtwo has just saved her life.
"Your struggle is useless!" the golems cry out. "You cannot escape us! You will die!"
Suddenly, a light is seen coming from deep inside the forest. Celebi is shining brightly.
"I warned you against hurting Mewtwo while he was under my protection! Now you will suffer for what you have done!"
Celebi is brimming with power that rivals even Mewtwo's.
"We are immortal!" the golems announce. "What can you possibly do to us?"
The world begins to twist and distort around the golems as they are affected by Celebi's power.
"I will make sure that you suffer for all eternity!"
Regice, Regirock and Registeel are sent far, far, into the future, past the age of the stars and galaxies, where the universe is cold and silent. They have been sent into the end of all existence where suns and worlds have fallen apart.
The golems feel themselves being pulled apart by the void, becoming a part of it, and at the same time, feeling the pain of emptiness and eternity. They will never be whole again.
Celebi gasps for breath. She has never done something like that before and it has drained a lot of her power, but for the time being, things are once again calm and safe in the young forest.