You are Anon. You got adopted by Prince Shining Armor for tax reasons, long after your adventures ended. But you're starting to think that Shining Armor might be a terrible dad.
Princess Twilight Sparkle helped Pinkie Pie clone herself to finish a giant gingerbread castle. Twilight's going to identify the clone, with 𝑠𝑐𝑖𝑒𝑛𝑐𝑒. But somepony isn't happy.
Many years after escaping from Ponyville, Pinkie Pie's evil clone senses a disaster in Ponyville affecting everycreature, including her. So she takes a break from her villainous routine, to stop it by any means necessary.