This story is a sequel to My Little Pony Friendship is Magic What If?: Volume 3

It's back for a fourth time, that series that seeks to answer the question "What if that episode had been written differently?"!

This is the biggest installment yet, sixteen episodes are up for a rewrite, and among them are six episodes from Season 6. Including one episode being stretched into a two parter, and another two parter being rewritten. But which episodes are among the sixteen will that be featured here? You'll have to read to find out.

Once again you must all remember that the episodes included here are the result of personal opinion, so don't get upset if an episode you didn't like doesn't appear here or an episode you did like does appear. I will gladly respect your opinions if you promise to respect mine. And as always, you are not obligated to read any of these chapters.

Yet again I must mention that I mean no disrespect to Hasbro, the DHX staff, or anyone who likes the episodes that will be included here. The intent of this fic is for entertainment purposes only.

Want to see what episodes have already been re-written? Check out volumes 1-3! Volume 1 can be found here, Volume 2 can be found here, and Volume 3 can be found here. Apologies for the image, it was the best I could find for Season 6.

(Warning!: This fic has been rated Teen as a precaution, as it will contain diapers and light adult baby/diaper lover themes. Reader discretion is advised, and if you are uncomfortable with such material please click elsewhere. You have been warned. Coverart by Zalakir on Deviant Art, used with permission Proofread by Smity 1038 on Deviant Art.)

Ever since that faithful concert in Ponyville, life for Countess Coloratura (or Rara as she's calling herself) has gone nowhere but up.

One night, after yet another crowd pleasing performance, the young pop star retreats to her private dressing room. And out of curiosity, decides to try out a form of relaxation that she read about in a magazine.

As she indulges in this new "treatment", Rara will be surprised not only at how effective it is, but also at the feelings it will bring to the surface.

One day after talking with Starlight, Spike begins to glow most unusually. He quickly realizes that this is the call of the dragon lord, and that means he is needed in the dragon lands again.

Not willing to send the dragon off on his own, Twilight decides have to Starlight go with him, hoping the change of scenery will help her student get over her recent failure to redeem Queen Chrysalis.

But upon arriving in the dragon lands, Spike and Starlight discover that Dragon Lady Ember is facing a challenge to her authority in the form of Garble, and the possibility of war looms overhead. To make matters worse, Starlight doesn't see how she'll be of any help.

After all, if Starlight couldn't redeem Queen Chrysalis, how is she supposed to help a species she knows nothing about? Will Spike and Starlight be able to help, or will it be up to Spike alone to save the day?

(Proofread by Smity1038 on Deviant Art, and proofread and edited by yodajax10 on FimFiction.)

Hearth's Warming is usually a happy time of year, especially for school aged foals. But for Diamond Tiara, the holiday is just a reminder of her home life, stuck between an always working father and a mother that constantly berates and heckles her.

While attending a Hearth's Warming party hosted by Princess Twilight, Diamond finds herself growing jealous of the family her new friend, Apple Bloom has. And when Apple Bloom reaches out to a friend in need, it doesn't take long for the subject to turn to family.

But both fillies will be quite surprised by what they learn about the other, and little will they realize just how fortunate they are to have each other.

(Takes place in the background of "A Hearth's Warming Tail". Proofread by Smity1038 on Deviant Art, and proofread and edited by deadpansnarker on FimFiction.)

With Pinkie Pie's birthday coming up, her friends find themselves facing a bit of a dilemma about how to celebrate it. Fortunately, Cheese Sandwich just so happens to come back to town, and he's more than willing to take over the party planning.

Pinkie is quite thrilled to know her party pal is back in town, but soon she can't help but notice that Cheese seems to be acting rather strange around her.

Will Pinkie be able to figure out why Cheese seems to be acting so odd? And what's the real reason behind Cheese's return to Ponyville?

(Warning!: This fic has been rated Teen as a precaution, as it will contain diapers and diaper useage. Please read with discretion, or click elsewhere if it's outside your comfort zone. Thank you.)

Scootaloo loves her mother, she really does. She just wishes her mom would stop treating her like a baby all the time, especially now that she has her cutie mark.

Then, one day, Scootaloo accidentally brings home the wrong saddlebag from Twilight Time. And when Dizzy Twister goes to return it, a mishap ensues and the potion inside turns her into a foal. Luckily, Scootaloo soon finds out.

But now Scootaloo must care for her foalified mother, until a cure can be found. And even though she has the help of her friend, Diamond Tiara, Scootaloo is about to discover just how much responsibility comes with taking care of a baby.

Will Scootaloo and Diamond Tiara be able to keep the foalish Dizzy Twister under control? And will Scootaloo be able to find a cure before her father comes home?

(Dedicated to Matt11. Proofread and editied by deadpansnarker.)

(Takes place immediately after "Luna Eclipsed", colab with yodajax10.) Another Nightmare Night has come and gone, and now Ponyville begins the process of cleaning up after it.

Spike offers to help out, but Twilight reassures him that they can handle things on their own. So, reluctantly, the baby dragon decides to spend a little time with Princess Luna, who has just come out of her shell.

But what can the two talk about? Quite a lot, actually. And both will come to realize, they have something in common.

(Featured on 9/09/2016)

"Potty Training" two very simple words that can mean so much for the parents, but what about the foals that go through it? Well, Pound and Pumpkin Cake may be ready for potty training, but that doesn't mean it's going to be easy. Not if they have anything to say about!

Prepare to laugh yourself silly, as the twins get into all sorts of hilarious hijinks in and out of the bathroom, while their parents, and Pinkie Pie, attempt to help them out.

But throughout it all, Pound and Pumpkin have each other. And with their foalish curiosity, they're bound to get up to mischief. Will they eventually be able to graduate from their diapers? Read on, and find out.

(Rated Teen as a precaution, as some chapters may contain more sensitive material that may be uncomfortable to certain viewers. Most humor should be SFW/PG rated. Proofread by Smity1038 on Deviantart. If you have ideas for any potty training escapades, feel free to suggest them. Now has a TVTropes page which can be viewed here.)

Getting sick is no fun, and Pinkie Pie learns this the hard way when she comes down with a bad case of hay fever. It's nothing but bed rest and medicine for her.

Realizing they'll need somepony else to help foalsit their children, The Cakes prepare to turn to Pinkie's friends but to their surprise it's Rarity who volunteers.

Before long, Pound and Pumpkin Cake take a shine to their new foalsitter, much to Pinkie's dismay. It seems to her that she's being replaced.

It's up to Mr. and Mrs. Cake to help Pinkie realize just how much she means to them, and how nopony could ever take her place, no matter what.

(Proofread by Smity1038 on DeviantArt.)

(Takes place immediately after "The Cart Before The Ponies". Proofread by Smity1038 on DeviantArt.)

The Applewood Derby has come and gone, the prizes have been awarded, and for three ponies a very painful lesson has been learned about listening to their young sisters.

However, the aftermath doesn't end with the derby. Rainbow Dash, Rarity, and Applejack, each find themselves having to answer for their actions to some ponies who aren't too thrilled with the way they behaved before and during the derby.

For Rainbow Dash, Scootaloo's mother has been cautious about her daughter's idol worship of Rainbow Dash, and now she has doubts about whether Rainbow Dash is a good role model. Rainbow will have to prove she can be trusted, if she doesn't want to lose her big sister status.

For Rarity, an unexpected visit from her parents causes her to once again relive what she viewed as her greatest failure. And now her parents are worried about the example she's setting for Sweetie Belle. It'll take all of Rarity's efforts to show she can be a positive influence for her sister.

And for Applejack, Big Macintosh has been concerned about her clinging to old traditions and routinely ignoring Apple Bloom, while also trying to protect her. Reluctantly, he decides to try and talk some sense into his sister, re-opening old wounds in the process. But Applejack will have to learn to let go of the past.