With the defeat of Chrysalis and her allies, peace was finally achieved amongst many creatures. All creatures were given the choice of happiness, except for one creature that was stolen of her mother.
Twilight Sparkle and Potion Nova work to make the Cosmos Elixir, but after an embarrassing moment makes Twilight run away, she discovers that Potion Nova may have quit making potions altogether.
Luster Dawn and Potion Nova have been dating for some time now, and their relationship keeps growing stronger and stronger the longer they spend together, especially whenever they both engage in a rather odd part of their relationship together...
Apple Bloom meets somepony who's just as much into potions as she is, and soon becomes enamored with her to the point of not allowing anything but perfection in her work. She ends up learning a lesson she'll never forget.
After their wedding, Rainbow Dash, Starlight Glimmer, and Spike are now husband and wives. This is how they gave birth to their new child, and how she came to be.