(A/N: And now, here's the extra chapter! Enjoy!)

A few days later, in the Mushroom Kingdom...

[Mario's House]

Mario: Wow, that's some vacation, huh bro?

Luigi: Yep, very relaxing. It's a bit weird that Bowser isn't looking for us, because we brung Peach and Daisy along with us.

Mario: Yeah, it IS a bit weird...because YOU sent that letter to Bowser's Castle!

Luigi: I said I'm sorry! I just wanna let my friends and enemies know that we're going! That's it! I just wanna be a nice person, that's all.

Mario: Whatever. Anyway, up for a bit of Mario Kart Wii?

Luigi: Yes. Turn on the Wii, I'll catch up.

Mario: OK.

But as soon as Mario turned on the TV...

Announcer: This is a MKNN (Mushroom Kingdom News Network) Special Report!

Anchorman: We interrupt this broadcast for an important news flash. Bowser, the Koopa King, got really beat up! And now we go live in Bowser's room in Bowser's Castle.

Reporter: Thank you. We're here live in Bowser's Castle, where we see a really beat-up Bowser. Take a look.

In Mario's TV screen, he sees Bowser with many casts and bandages.

Mario: Holy cow! How did he end up in that state?

Luigi: What happened?

Mario: Look.

Luigi looked at the TV.

Luigi: Wow! How did he end up like that?

Mario: I don't know. Did I go sleepwalking and bashed him up?

Luigi: Maybe. But I always go to the bathroom very late at night. I always saw you in bed, even in our vacation house.

Mario: So, if it wasn't me, then who did?

Reporter: And now, we ask Bowser a few questions. I hope he doesn't burn me with his fire breath. Anyway, what happened to you?

Bowser: I got this letter, saying that Mario and Luigi are going to take a vacation in the real world...

Mario: _

Luigi: Eh, hehe...

Bowser: ..., so I used a Warp Pipe to find and defeat Mario! When I used it, I ended up in a city which houses many highly-intelligent animals. Petropolis, if recall correctly.

Mario: Petropolis?

Luigi: What kind of city is that?

Mario: If he used a Warp Pipe to find us, I think that city's in the real world.

Luigi: We should go there one day.

Bowser: Everyone there called me a "dragon-turtle hybrid".

Mario: Well, it's true.

Luigi: I thought so too.

Bowser: So I started to search for Mario first. To make my search easier, I started to crush the buildings with my punches and strangled everybody into answering me. Then, they came. Two secret agents. A boy dog and a girl cat. Their names: Dudley Puppy and Kitty Katswell.

Mario: Dudley Puppy?

Luigi: Kitty Katswell?

Mario: Who the heck are those two?

Luigi: I don't know, but if we continue watching this, I think we'll learn more about them.

Mario: I thought the same thing. Let's keep watching.

Luigi: Also, do you think that dogs and cats are supposed to be mortal enemies?

Mario: Yeah, I guess. But I think that in Petropolis, dogs and cats can be friends, partners, couples, etc.

Luigi: Weird...anyway, let's keep watching.

Bowser: They beat me up, big time. They used all kinds of martial arts on me! Even Pokemon-like attacks!

Mario: Wow. Whoever these two are, they're really good fighters.

Luigi: I know, right? Let's keep watching.

Bowser: Good thing I still have enough strength in me left to use a Smash Ball I've saving all this time.

Mario: A Smash Ball? I thought Super Smash Bros. Brawl was over a couple of years ago!

Luigi: I know, it's weird, right? Who could save an item THAT powerful?

Bowser: So I used it to transform to Giga Bowser! Good thing that I'm invincible at that time! I used a Pokemon-like attack called Fusion Flare on them 2 times, and BOOM! I defeated them.

Luigi: Well, it's true. Giga Bowser IS powerful.

Bowser: But just as I was about to continue my search, I felt a vibration that worsens every second. I realized that the vibration was coming from Dudley and Kitty, who are revived, their wounds healed and used some kind of divine power. They defeated me. After that, I ended up here. I don't know how I ended up here, but the last thing I remember was being Falcon Punch'd...and that's it. That's why I ended up like this.

Reporter: So there you have it. You guys think that Mario and Luigi sleepwalked and bashed him? Hahaha...WRONG!

Anchorman: So this ends another MKNN Special Report. Thank for watching. And now back to our present broadcast.

Mario: Ah, so that's how he ended up like that.

Luigi: I think we should challenge those secret agents for fun one day.

Mario: ...Nah, I think not. Anyway, let's play. I'll own you with my Sprinter!

Luigi: Not if I own you with mine!

Mario: Let's-a go!

THE END

(A/N: Well, that's it. I hoped you enjoyed this crossover story! Thanks again for reading!)