The Camping Episode 2.0.

Thanks to the actions of a vengeful Queen Throx, a Fly-Der swarm is coming to attack the Mane Six and their Lodger friends, and thus they have to survive the whole thing as much as they can. But by accidentally wandering through familiar lands, they discover not only the reason why these pests expanded their reach from the Luna Bay, but also the hidden stories between those of Rockhoof and what gave him his physique, the unknown extended story between Sable Spirit and Mistmare, and the aftermath of Flash Magnus' rescue, his fate, and the awakening of an even greater dragon threat. This threat, known as Magmatacus, is considerably Equestria's most powerful dragon who hates anything that isn't purely tough, including ponies, griffins, Changelings, and anything existing in Equestria, vowing to destroy it entirely with his overly-powerful fire breath, starting with Canterlot. With this threat proving to be far worse than the Fly-Ders once they are chased off with Throx, they have to do what they can to stop this threat once and for all, with help from Drakesis, Torch, Ember, and Pred.