So I had originally worded a reply back that was way to sarcastic so I deleted it all to start over because I see your avatar often and I wanted to try a different approach. I dont harbor the knowledge of every Mario game and there are some I have not played in a long time, so this is just my memory of some of the ones I have played and I am really interested in your response.
In Super Mario Bros King Koopa caused havoc in the Mushroom Kingdom by stealing Toads (was there ever a reason for this? I must admit that it was probably in the instruction manual, something I have not sought out to read ever but now that it is in my mind I will later) and turning some people into blocks but most importantly stealing Princess Toadstool. Mario saves the princess.
Is it ok if we dont include the US Mario 2 considering it was originally Doki Doki Panic? I like Mario 2 but I feel like if we are honest what we know as Lost Levels is actually the sequel of which I only played in Super Mario All Stars and dont remember a story, just difficulty. For what it is worth, I wish every sequel went off the rails like US Mario 2 did.
Super Mario 3 has the story of recovering magic wands in each level but if it were made today, you might be calling it kingdom, which are in a state of panic over their Kings. When we reach the end we defeat King Koopa and save Princess Toadstool.
In Super Mario World we play as the brothers again with their new companion Yoshi I believe the story delivered by a speaker box says the Koopa Kids stole Yoshi eggs that again are distributed amongs multiple Castles (kingdoms). We defeat the Koopa Kids, save the Yoshi eggs, defeat King Koopa ( it was 64 when it changed to Peach and Bowser to match the Japanese versions right? Im still upset about not having Dr Robotnic being a thing. ) and save Princess Toadstool.
I played Super Mario Land on GB but dont remember too much so I am going to skip to 2 which if I said the last time I played it was 20 years ago I might be being optimistic. However, I remember having to go around and collect 6 magic coins in a game filled with thousands of regular coins. It seemed silly to me then and now. I still actually really like this one though.
Mario 64 came around and I saved up for a year to get it and Nintendo 64 (another aside I wish they kept the Ultra 64 name and logo) but now we are collecting stars. My train ride is coming to an end so I am going to move faster sorry. We play as the Mario Br... no just Mario that kind of bummed me out. I had this system with 4 controller ports and my little brother cant play Liugi but thats irrelevant. I collected my stars saved Peach now from Bowser now. I got a cake and a kiss on the nose and went back to collect the rest of my stars because the Yoshi thing was spoiled for me. I also thought the 100 lives was kind of a useless bonus. Like why have you go through the difficulty of getting everything and then give me 100 lives. I needed those lives in the flying carpet level. Still salty obviously.
Super Mario Sunshine, by this point I wasnt paying too much to story reveal information from E3 or anything so I didnt buy it. I told my friend Why partly what is outlined above and he said this one was different. I bought it. It started off ok. In mind I thought Everyone hated the Ocarina of Time Water Dungeoun and then Nintendo makes a game primarily focused around water physics in a Mario game but it had no signs of following along with my story grievances so I was happy. Until Bowser Jr steals Peach and I realize that nothing has changed.
I played the 3ds game and liked it. I played the Wii Us and didnt. I skipped Wii all together.
So if I am understanding it correctly, Peach has been kidnapped again, by what I think is the worst idea for enemies in that they are evil wedding planners, they have stolen something from each Kingdom (like 3). But this one is special because when you are in the desert the physics may act slippery.
Ending spoilers
I just find it interesting everyone is seemingly ok with the story idea of the inter species physical relationship Nintendo is trying to tell.