Goku was standing in the middle of a vast, otherworldly plain. He could feel a powerful energy all around him, but he couldn't quite place it. Suddenly, the ground shook beneath his feet, and he turned to see a blindingly bright light approaching from the distance.
As the light grew closer, Goku recognized the form of Arceus, the legendary Pokemon who created the universe. Arceus was massive, standing several stories tall, and its eyes glowed with an awesome power that radiated across the plain.
Goku immediately recognized the threat and knew he had to face it. He concentrated his chi and launched himself into the sky, racing towards Arceus at incredible speed.
As Goku approached, Arceus suddenly disappeared, only to reappear behind him, catching him off guard. Before Goku could react, a massive bolt of lightning struck him, sending him flying backwards, slamming into the ground with a loud thud.
Goku was quickly up on his feet, his eyes glowing with a golden aura. He charged at Arceus again, moving faster than before. But Arceus was prepared, and with a flick of its hand, sent Goku flying once more.
The battle raged on for hours, each fighter using their full range of powers and abilities. But in the end, it was Goku who emerged victorious. With a final burst of energy, he struck Arceus with such force that the legendary Pokemon was sent crashing into the ground.
And then, just as suddenly as it had begun, the battle was over, and Arceus vanished once more, leaving Goku standing alone in the middle of the plain.