Pinkie Pie wakes up too late in time to bake a cake for Sunny Daze's birthday, but finds a cake hot and made already? It's not until later that Pinkie finds out who helped her and makes sure to return the favor, by throwing this new friendly and helpful stranger a party of course, but not just a any party apparently, a cute-ceanera party!
Shout out to Flutterbrony539 for editing my story, you can find his profile page right here: http://www.fimfiction.net/user/Flutterbrony539