Spike and Pinkie continue their adventures in Season 2, The two-party, fight bad guys, party some more, and have mis adventures with their friends and family
Marble Pie comes to realise that meeting hitherto unknown family is merely awkward; subsequently developing feelings for your distant cousin is much, much worse.
Pinkie's friends notice something strange going on,mysterious disapearences, her being fidgety and tired. What in the hay is going on here? That's why they bring over the Pie Family.
A human finds themselves as a voice within Pinkie's mind, only she's a young filly still on the rock farm. Aching for home, but worried what others might think, this new 'Mena' must maneuver life in Equestria. As much a life they can anyways.
Back when Pinkie Pie was still a filly, Maud joined her first party. After much retrospection, Maud came to a better understanding of both her and her sister.
Sequel to "The Not-So-Normal Adventures of King Sombra and Pinkie Pie". Sombra and Pinkie visit Pinkie's home to meet her family. Of course, as Sombra soon learns, family isn't all what it's cracked up to be.