One morning, Mario and Luigi are at their house getting ready for Princess Peach's birthday. When all of a sudden, Mario hears Bowser's Airship fly across his house towards Peach's Castle. Mario looks out the window, gasps, and then wakes up Luigi. (He was sleeping still). Luigi refuses to get out of bed, and Mario grabs Luigi by the head and slams his head on the window. Luigi's eyes pop out and Luigi screams when he sees Bowser's Airship go to Peach's Castle. The Bros. run out the door of their house and then it switches to Bowser on his Airship.
"MUAH HA HA HA! Koopalings! Are you ready for the ambush?" Bowser says.
"Yes we are! Let's kidnap the princess!" the Koopalings say. (including Bowser Jr.)
Bowser and the Koopalings then get in their clown cars and the Koopalings use their magic to ambush the castle. Then it switches to a weird figure holding some sort of powerful staff watching Mario and Luigi run towards the castle while it's being ambushed. That figure says, "I finally found them..." Peach, inside the castle with the toads, gets a pet cat for her birthday and names it Lario. When then, Bowser and the Koopalings break in through the ceiling and walls. As Peach and Toads get shocked and panic, the Toads flee while the Blue Toad hides behind the throne. Mario and Luigi then burst through the castle doors with an epic entrance. Bowser points at Mario and Luigi, and the Koopalings, still in their clown cars, advance towards them. Mario and Luigi jump on their heads, and they get all dizzy with the stars above their heads and stuff. Mario and Luigi run towards Bowser and Bowser Jr. only to realize that it's cardboard cutouts of them! They then look to the right and see Bowser and Bowser Jr. laughing while Bowser holds Peach and Bowser Jr. holds Lario. But then, the shape of a cat's face outlined in purple becomes visible near the wall Bowser, Bowser Jr., Peach, and Lario are next to. Then that wall explodes and the people who were next to that wall fly in the air. Mario looks at Luigi and nods his head. Mario then jumps and catches Lario, while Luigi jumps and catches Peach. Bowser slams into the throne chair and knocks it over. Blue Toad realizes his hiding place got destroyed and runs behind Mario. Bowser Jr. falls on the ground. While Bowser and Bowser Jr. are unconscious, the smoke at the exploded wall clears up and shows WART holding a dark staff with a kitteh's face on it. Everyone gasps when see Wart.
Wart says, "It's been a while Mario Bros.! Great to see you guys are doing good! Anyways, I got big plans, so let's get this overwith shall we gentlemen?
Mario gives Lario to Blue Toad, and then Mario gets in an angry, fighting stance.
"What's this? Hm, I don't feel like playing dirty right now, so I might as well lock you guys up." Wart says as he points his Cat Staff towards the ceiling.
The staff shoots a purple laser, and a dark cage with a cat face on it falls on Mario, Luigi, Toad, Peach, and Lario. Those cages also fall on Bowser and the Koopalings.
"Well, it was great seeing you guys again, but I gotta go. Ta-ta! Minions! Take Bowser and his henchmen on our Airship. Hm? What's this? A cat? Ah, he'll make the perfect pet for my cat kingdom!" Wart says.
"No!" Peach yells.
"Hm, I guess I'll have to take him by force!" Wart commands.
Wart's staff lights up and a laser shoots Lario then brings Lario to Wart.
"Enjoy being locked up Mario Bros.! Haha!" Wart says as he leaves holding the cat in his slimy arms.
"LARRRRRIIIIOOOOOOOOO!" Peach yells.
Soon after Wart's Airship takes off with Bowser, Bowser Jr., The Koopalings, and Lario held captive, Toadsworth and the other Toads break the lock on the cage and Mario, Luigi, Blue Toad, and Peach are set free. Peach runs outside, acting as if she can pursue Wart's Airship when it had already taken off a while ago. Mario, Luigi, and Blue Toad decide to follow her, and the first level/tutorial/or whatever begins. XD This was way longer than I thought .

See bottom notes for more details about the Planets~

Planet 1: Biggest Planet and Bowl-Island like Planet, the Jumping-from-branch-to-branch section is in the Whittle Forest, but not shown. Also, the Whittle Forest is the darker green section of the Island.
Planet 2: Spherical Water Planet, with Toad Brigade Ship crashed under the water(hard to read), and the Metallic Platform is on the surface of the water, not on the side. The Metallic Platform is the platform that Small Mario cannot reach, so he'll have to go back to normal size to jump out of the water and reach it.
Planet 3: Flat Land Planet(s), Mario will have to defeat enemies to break the barrier that is blocking the Size-Changing Pipe(also hard to read), then shrink and use Floaty Fluffs to go across the Mini-Platforms.
Planet 4: Rectangular-Prism Dirt Planet, contained with Blue Star Chips and Monty Moles. There are also many dirt mountains other than the two I mentioned, which are on other sides of the planet. The first Dirt Mountain is the one you first land on when coming into this galaxy along with a checkpoint on it, and the second Dirt Mountain is the tallest and isn't accessible until after you find all the Blue Star Chips, and on top of it is the Normal Pipe that leads to the Boss.
Each Planet will also get more art of its own to explain it better visually.

I couldn't label everything on there, so I'll do it here:
M - Where Mario lands at the beginning of the galaxy
W - The Introduction Whittle, who talks to you right after you land in the galaxy.
G - Goomba
P - Piranna Plant
F - Flowerbeds (It's kinda hard to see)
Dark Green Spots - Each tall hill
Obviously, there will be more enemies, flowerbeds, and etc. but this is just a quick sketch. And if you are confused, read the paragraphs I typed. They are there for a reason.

What it could look like as Mario goes through the forest and talks to the Whittles for the first time in this galaxy.

After Mario talks to the Elder, the platforms are unveiled and Mario uses them to platform to the top, then going into the Size-Changing Pipe, and finally exiting the tree via the small crack as Small Mario, which leads to the Jumping-from-branch-to-branch section. This location is NOT 2D, see the next pic for a 3D View.

This is my first 3D drawing, in terms of distance. This is not the shape of a vortex, it is the shape of a cylindrical tree from the top view.

Please see the previous picture of the Whittle Elder's tree, it goes along with this one.

This picture should describe how this section will work.

Since this planet and the platforms are just flat, I don't need to make more art for this planet. Also, extra notes under the pic.

-Red M is Mario, Blue M's are Magikoopas, and Brown M's are Monty Moles. (So no confusion for the same letter.)
-The pink/purple-ish thing around the Size-Changing Pipe is a barrier, similar to the one guarding the Yoshi Egg from Yoshi Star. You'll need to kill all the enemies to open it.
-When Mario lands on this planet, he'll have to get rid of barrier by killing the enemies. The barrier unveils a Size-Changing Pipe which makes Mario smaller. You then grab the Floaty Fluffs(which are too small for Normal sized Mario to grab) and go from platform to platform.
-Also, I didn't put this in the pic but, when Mario becomes small, you can go to the puddle and swim in it. In there is a 1up Mushroom.
-And finally, on the last platform, you'll have to kill 2 Monty Moles before the Launch Star appears.

I promise I will never add that "'c-circle' NSK" thing again. XP