The Truth of Holder's Boulder

Since of having seen "Hearthbreakers", Junjie and his cronies once again deside to ster up some trouble for Equestia once again, this time, on the Pie family. And over their family procession: Holder's Boulder. Why? Because Junjie claims that it may not really be an actual boulder. But it's really an imprisoned egg of a Rock Golum/Parrot Dragon hybreed that was sealed there by the Celestia sisters awhile back because it was being too destructive with the devouring of mountains and causing rockslides that were threatening pony and mythic being civilisation. At first, the Pies thought Junjie and friends were being abunch of morons and stated the blouders origins of being found by their ansister. But Junjie, having been able to steal another secret file of Celestia, reveiled that the Grandfather Pie was a member of the Royal Guard who he and the entire family were entrusted to guard the imprisoned creature Rockus The Mountain Eater for many of their generations, but that he must keep it a secret from the family and made it up as a lucky egg-shaped charm. The pies were shocked and dishearten that all this time, their beloved family procession, is really an imprisonment of a a dishastor causing beast. Junjie then proceeded to impatently use an exspearimental device of Galaxhar's, dispite his warnings, to use it to counter act the Elements harmonic magic and re-free Rockus. Problem is, Rockus was freed as a baby. And it mistook Junjie as it's mother. Momentarly embarissed in more ways then one, Junjie learned to make lemonaide out of the lemons with the fact that Rockus was at least freed, albeit WAY more infentile then he hoped. Knowing that Rockus wasn't intentionally evil, at the least, he just couldn't control his eating habits and is the missing baby of a titanic Rock Titan and a Titanic Dragon, Junjie plans to correct that by raising Rockus in darkness. Limestone and Marble, feeling sympathic for the confused creature, with Maud's help, were able to momentarly distract Junjie and his cronies with a "Who's the better Dreamworks Villain" arguement and managed to take Rockus away while their Parents do what they can to make sure the villains don't notice the deception. Now the three sisters need to be able to get to Pinkie and the other of the Mane 6 to get hekp from them and the Lougers before a more truely evil Rockus is born. And even then, what is to become of Rockus afterwords?