I suppose this is where I put the disclaimer? Guess so. I don't own Metroid or Mario. Trust me, if I did. You wouldn't be seeing this story posted on this site. Instead, you'd be seeing it as a video game that you'd be struggling to get through.
Nintenfreak
Chapter 1:
When two separate universes with two very different sets of characters combine, it can only mean this. There is going to be big trouble. It does not happen often, but when it does, most people just sit back and watch the fireworks. Now it's happening again. It is happening this time in both the Mario and Metroid universes. They are clashing. Normally the excursions between the two are brief. (To this, I am referring to the summer and Winter Olympics between Mario and Sonic.) Now it is going to be bad.
Samus Aran was told this four hours ago on the Galactic Federation flagship. Now she flew to warn the inhabitants of the Mushroom Kingdom. Whoever Mario was, he had to know about this at all costs. She landed safely on the planet at the heart of the Mushroom Kingdom where many mushroom like people wielded swords and pointed them timidly at her ship.
"What do you think it is?" one of the mushrooms asked.
"C-calm d-down," the one with red spots on its head replies. "It doesn't look dangerous."
"It has weapons!" the one with glasses shouted. "Of course it's dangerous!"
Samus watched these odd little creatures from the safety of her cockpit with amusement. She exited her ship which only frightened the creatures further.
The red spotted one fainted.
"And he's supposed to be our leader," the one with glasses murmured. "We won't let you take our kingdom!"
Samus scanned them all. The computer identified them as toads, the creatures that lived in the Mushroom Kingdom. They certainly looked like mushrooms. "I'm not here to take your kingdom," she told them all. "I'm here to warn it. I must speak with Mario immediately."
The glasses toad shifted his glasses. "Unfortunately, Mario is away rescuing Princess Peach from yet another one of Bowser's nefarious schemes."
Samus recalled the briefing she had on Bowser. He was the main villain of this world and very dangerous. "Perhaps I should go help him."
"I don't know exactly where he is at the moment."
Samus sighed. "Who is the next greatest hero after Mario?"
"That would be Luigi. He's probably sitting at his house completely bored."
"Then I will make my way over there. If you would be so kind as to lead the way there."
"I would feel better if you were taken into custody instead, but you seem like you need immediate attention. Follow me. Uh… the rest of you, stay here."
The toad grabbed Samus' arm and dragged her down the road.