The character's and creature's who are going to be in this story are:
Marion:Peach and Mario son
Star:Peach and Mario daughter
Leon:Luigi and Daisy son
Daffodil:Luigi and Daisy daughter
Koopa's
Boo's
Twomp's
Goomba's
Bullet Bill's
Shyguy's
Bully's
Lakitu's
Blooper's
Bowser
Bowser Jr.
Yoshi
and more
(I'll post chapter 1 soon)

(The user's in this Fan-Fic is from NintendoLand)
Chapter1:The Bad Ending of A Good Day

It is a cool morning in the Mushroom Kingdom.The bird's are chirping.
(So you know I might sometime's write like this)
Marion!!!Come down for breakfast,Mario say's.You too Leon,Luigi say's.Marion and Leon get's dress and run down to the kitchen.The light's are off in the kitchen.Marion and Leon look for the light's.I found it,say's Marion.Marion turn's it on.Suprise!!!!!!!!!!!!Happy Birthday Marion and Leon,say's everybody in the castle.
Mario:Happy Birthday Marion
Marion:Thank's dad.
Luigi:Happy birthday son.
Leon:Thank's dad.
Peach,Daisy,Star,and Daffodil walk into the kitchen with a big cake.They set it down.
Peach and Daisy:Where's our birthday boy's.
Marion and Leon:Mmmmmoooooooommmmmmmm.
Star and Daffodil:Happy birthday big bro.(kisses their brother)
Marion and Leon:Thank's(blushe's and rub head their head and kiss their sister)
Benant100:Hope I didn't miss the Party.
Mario:No.It just started.
Ben:Oh great.Hope you don't mind I brought some friend's with me.kirbyviper93,Zelda09,TWILIGHT LINK,MarioLuigiCombo,Yoshi's Island64 and Yoshi Star come in.
Yoshi Star come's in with some luma's.Yoshi's Island64 come's in with some of his friend's who are kid Yoshi's.Kirb(kirbyviper93) look's like a pink kirby and with his gift's and his warp star.Zelda09 and TWILIGHT LINK cme in holding their gift and hand's.MarioLuigiCombo come's in with overall's an Orange T-shirt... Orange shoes... Orange cap with no emblem... No Stache... No gloves... No socks and his gift.
Everybody who just came in:Happy Birth Day Marion and Leon.
Kirb:Open my gift first.
Marion and Leon open Kirb's gift.
Marion:Wow a Red Warp Star
Leon:Sweet a Green Warp Star
Zelda09 and TWILIGHT LINK:Our own next.
Marion and Leon:Sweet a sword.
Marion and Leon does what Toon Link did when he took the Master Sword from the floor.
Peach and Daisy:Be careful with the sword.
MarioLuigiCombo:Mine own next.
Marion and Leon:What's this?
Mario and Luigi:It's an unlimited smash ball.You can use your special with it.
Marion and Leon:Sweet.(Marion and Leon are about to activate the smash ball)
Peach and Daisy:Don't use it in the castle.
Marion and Leon:Okay mom.
Yoshi Star:Me next.(Two luma's come from behind Yoshi Star)
Marion:Sweet a red luma.
Leon:Sweet a green luma.
Yoshi Island64:I'm next.(Yoshi Island64 whislte's and two Yoshi's appear)
Marion and Leon:Sweet rainbow yoshi's.
Mario and Luigi:Me and your mom's wanted to give this.(Give Marion and Leon their old hat's)We know it might not mean alot to you guy's but........
Marion and Leon:It mean's alot to us dad.(Hug's their parent's and sister and start to cry)
Mario and Luigi:You and your sister's go play outside.
Marion and Leon:Okay.
(After Marion,Leon, and their sister went outside)
Mario:(whisper's something to Ben and MLC)Ok
Ben and MLC:Ok
(Meanwhile outside)
Marion:Tag your it Star.
Star:Mmmmmaaannnnnnnn
Star chase's after Daffodil.
Star:I'm going to catch you.
Daffodil:No your not.
Star tag's Daffodil.
Leon:hahahaha she tagged you.
Daffodil get's mad. Leon see's how his sister react's and start's running.
Leon:aaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhh
Daffodil:Come back here.
Daffodil trip's while chasing Leon.Daffodil has a cut.
Daffodil:(start's to cry)
Leon run's over to his and tickle's her to make her better and laugh.
Daffodil:Thank's for making me feel better brother.
Leon:Welcome sis.
Marion see's something in the sky and dark figure's.
(Back inside)
Peach:I wonder what the children are doing.
There's an explosion outside.
Mario and everybody else run outside and Bowser,Bowser Jr.,and Dark figure's of themselve's.(Bowser look's like his giga Bowser form and Bowser J.R. look's like Bowser)
Bowser and BowserJ.r. is holding Mario and Luigi's kid's.
Peach:Star!!!!!!!!!!Marion!!!!!!!!!!
Daisy:Daffodil!!!!!!!!!!!!Leon!!!!!!!!
Mario and Luigi:Put them down now.
Bowser and Bowser j.r.:As you wish?
Bowser and Bowser jr throw's Mario and Luigi's children to the wall.
Mario and Luigi:I will kill you.
Mario and Luigi charge's toward Bowser and Bowser jr.Dark figure's of Mario and Luigi blast the Mario bro's with dark super nova beam.The Mario bro's are blasted to the wall and are wounded.
Ben:Yoshi's Island64 and Yoshi take Marion and them away from here now.
Both Yoshi's:Okay(Take's Mario and Luigi's children and kirbyviper93,TWILIGHT LINK,kirbyviper93,Zelda09,TWILIGHT LINK,and MarioLuigiCombo far away)
A dark TWILIGHT LINK and Zelda09 tried shoot 3 arrow's at TWILIGHT LINK and Zelda09 but Ben jumped in the way and is hit in the leg.Ben is bleeding.
Ben:Yoshi's Island64 and Yoshi keep going I'll be ok.
Yoshi's Island64 and Yoshi Star speed up and reach a far away place and they can see what is going on at the castle.
Benant100:Give me your best.
Ben's dark self come and blast's Ben with a dark beam.Peach and Daisy are fighting their dark selve's.The Mario bro's,Peach,Daisy,and Ben use power star.The Mario bro's,Peach,Daisy,and Ben use the super mega star beam.Their dak selve's use an ultra mega dark beam.Their dark selve's attack's are stronger so Mario and them are attack by their attack.
Bowser:Bring me Mario,Peach,Luigi,and Daisy.
Dark Mario:What about him?(Point's at Ben)
Bowser:Abliterate him.
Ben is struggling to get up.Bowser and Bowser jr leave with Mario and them.
Ben:Mmm...aaa..rrrrr...iiii.......ooooo
Kirbyviper93,TWILIGHT LINK,kirbyviper93,Zelda09,TWILIGHT LINK,and MarioLuigiCombo's dark selve's use this move called the Ultimate Dark Spirit Bomb.Benant100 get's up.
Ben:I'm sorry Marion and Leon,that I couldn't save Mario and them.
The Dark being's throw their attack at Benant100.
Benant100:Aaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhh.
Marion and them could see an explosion where the mushroom kingdom is or was.
Yoshi Star:What happened?
Marion:Take us back.
Yoshi's island64:Okay
Marion and them could see the mushroom kingdom in peice's.Marion and them look's for Ben.
Leon:I see him.He's under a big peice of the wall.
Everybody help Ben out of there.
Ben:Marion and Leon I'm sorry.(say's weakly)
Marion and Leon:For what.
Ben:Bowser and them captured Mario and them.
Marion:Don't worry we'll......
Leon:get them back.
Ben:Ok.
Kirb:Now What?
Ben and Marion:We rescue everybody.
MarioLuigiCombo:But how?
MarioLuigiCombo alter-ego:What do you think.We have to train.
Ben:Correct.Marion,Leon,Star,and Daffodil come with me.
Ben take them to a shop he own's.(Yes my character own's a store)He go's in the back and come's back with 4 back pack's and some item's.
Ben:Marion and Leon your mother's and father's wanted me to give you this.
(Marion and Leon receive's a hammer:Easy for smashing enemy's,playing tennis,and golf)
Ben:Star and Daffodil your mother's and father's wanted me to give you girl's this.
(Star and Daffodil receive's parasol's:Great for gliding threw the sky and showing off how beatiful you are)
Kirb:I need to get some supplie's at Cappy Town.
Ben:Ok.Next stop Cappy Town.
End of Chapter 1
(Tell me what you think)

Man, this story is AWESOME!

(Thank's an here's chapter 2)

Chapter2:The Visit To Cappy Town and Some Traing
Last time left our hero's , a terrible thing happened.Mario and them got captured.Marion and everybody are going to cappy town to get supplies.

MLC:How are we suppose to get to Cappy town when it's on another planet.
Kirb:With my ship.
Marion:You have a ship.
Kirb:Yes.
Leon:Sweet
Kirbyviper93 take's a button out of his pocket(who knew he had pocket's).A gigantic star ship appear's from the cloud's.
Benant100:That is so cool.Ok,everybody let's go.(still struggling to say and walk)
Everybody went in the ship.Marion and Leon helped Ben in the ship.
Marion & Leon:Your welcome Ben.
Ben goes into one of the room's in the ship and went to bed to heal.
Kirb:So everybody should know it would take 2 hour's to reach Cappy town.
(1 Hour later)
Marion and Leon:Are we there yet?
Kirb:No
(5 Min. Later)
Marion and Leon:Are we there yet?
Kirb:No.
(5 Min. Later)
Marion and Leon:Are we there yet.
Kirb:Noooooooooooo!!!!!!!!
Marion and Leon:(Start to cry)
Zelda:Don't yell at them.(slap's KIrbyviper93 in the head)
Kirbyviper93:But........
Zelda:Don't you but me.
Kirb:Yes Zelda.
Zelda:It's alright Marion and Leon you can stop you crying.
Marion and Leon:Thank's Zelda.(smile's)
Zelda:Your welcome Marion and Leon.(Hug's them)Go play with your sister's and wake up Ben.
(50 Mins. Later)
Kirb:We're here.
Zelda:Marion ,you and Leon go help Ben.
Marion:Yes ma'am
Everybody came outside and waved to the Cappy's.
Cappy 1:Hey it's Zelda and TWILIGHT LINK.Hi princess and hero.
Zelda and Link waved to the Cappy.Ben see's a yellow Kirby blowing a kiss to Kirbyviper93.
Ben:You like her don't you Kirb.
Kirb:No I don't.(blushes)
Ben run's toward the Yellow Kirby.
Ben:My friend like's you.
Yellow Kirby:He does.
Ben:Yes he does.whisper's:He really like's you.
Yellow Kirby:(blushes then walk's over to Kirb)Hi
Kirb:Hi my name is Kirbyviper93 , but you can call me Kirb
Yellow Kirby:Hi my name's Caroline but you can call me Carol.
Star:I thougth we came here to get supplies and train not for Kirb to meet a girl.
Carol:I guess this good-bye for now.
Kirb:Well .....good-bye.
Before Carol left she kissed Kirb on the cheek.Kirb passes out.
TWILIGHT LINK:Someone get a bucket of water.
Daffodil get's a bucket of water and poured it on Kirb.
Kirb:What happened?
Ben:You got kissed and passed out.
Kirb:Oh.Ok
Ben:Let's go to the shop.
(A man named Mike who worked at the store say hello to our hero and told them they can have anything free there.)
Mike:So what shall it be.We have rare item's today.Magical Yo-Yo's
Ben:We'll have 13 of those yo-yo's please.
MLC:Why do we need 1 extra yo-yo
Ben:You'll find out.
MLC:Ok
Mike:Ok.Anything else.
Ben:Some food,first aid stuff,and any other weapon's and gear.
Mike:Ok.
Ben put all the supplies in the bag.
Ben:MLC take out the simulator box.
MLC:Ok
MLC take's out box and press a button on it and a lab appeared.
Marion and Kirb:SWEET!!!!!!!!
Ben:Let the training begin!!!!Marion and Leon you're with MLC.Daffodil you're with me.Star you're with TWILIGHT LINK and Zelda09.Yoshi's Island64 and Yoshi Star you can go take a rest.Kirb you can go hang with your girl.Kirb get's mad and run's back to Cappy Town.
Ben:First up is MLC team.Send in the koopa's and goomba's.
MLC:I'm going to teach you guy's some of my special move's.Marion think of fire in your hand and Leon you think of thunder or should I say lightning in your hand.
Marion:Ok.(Marion feel's an intense hot feeling in his heart then he open's his eye's and see's fire in his left hand)Sweet!!!!!
MLC:Now you Leon.
Leon:Ok(Leon feel's a intense stingy feeling in his heart then he open's his eye's and see thunder in his right hand.Sweet!!!!!!
MLC:Now hold each other hand.And think of 2 bullet bill's made out of fire an thunder and throw the thunder and fire.
Marion and Leon did what they were told and 2 gigantic bullet bill's hit a bunch of koopa's and goomba's.
Marion and Leon:That was totally wicked!!!!!!!!
Ben:Next TWIIGHT LINK and Zelda09's team.
Zelda:Star,you have the ability that your mother had.The power of the Grand Star.
Star:I do?
Link:Yes you do.
Star:Cool.
Zelda:Think of the joyful spirit's in everyone and let it go.
Star:Ok ma'am.(Star started to think of every joyful spirit there is and let it go and when she opened her eye's her clothe's were golden and had white stripe's on it.)
Link:You are now super grand star Star
Star:This is a beatiful dress.
Zelda:Now stick out your hand and think of a cannon then fire.
Star sticked out her hand and shot out a big beam out of it at the koopa's and goomba's
Zelda:That is called the joyful cannon.
Star:Sweet!!!!!!
Ben:Daffodil, you and me are next.
Daffodil:Ok.
Ben:Daffodil think of all hope and death.
Daffodil:Ok
Daffodil started to think of hope and death.Her dress started to become a light and shadow color.
Ben:You are now called shadow light Daffodil
Daffodil:I look beatiful
Ben: Did what zelda told your cousin.
Daffodil did what she was told and a beam came out which destroyed the goomba's and koopa's.
Ben:That's called the balanced cannon.
Daffodil:That was beatiful.
Kirbyviper93 came running.
Kirb:I found a temple where there are sage's of each element.
Ben:Where is it?
Kirb:On the other side of this planet.
Ben:Next stop is the elemental temple.

Can someone tell how it is?

Epic... Love the storyline!