My Little Adventure: Friendship is Mathmatical

Finn and Jake ran down the stairs, yelling their heads off as they called out to the purple alicorn currently making breakfast "Twilight! Oh glob oh glob oh glob! Did you see?" Twilight looked up from her bacon pancakes, which Jake had demanded last night before going to bed. "Yeah, I did. Were you up for it?" "No. But we saw the hoofprints and-and...." "Not only that. Look outside." Finn and Jake went upstairs to look while Twilight continued making the magical Bacon Pancakes. There was a high-pitched scream from upstairs in a few seconds and Finn and Jake came running back downstairs. "Where's everybody besides Flame Princess, Rainicorn, and Marcelene?" "Don't worry about them. They went to the supermarket to buy some crossbows and bombs. I think they also said something about boards and hammers, so after that they're going to Builder Bash's house to borrow some." Almost everypony in Equestria except the ponies currently inside had become Equine Monsters, or as Twilight stated later, Changelings. "Just stay calm and they won't know we are even exsistant in here! Unless that's something your kind doesn't do." In the time that Twilight was talking, Finn and Jake were running around the room in a circle screaming their heads off. "So much for keeping calm." Twilight thought. At that moment, everybody came back and Finn stopped screaming. He slapped Jake and the two remained calm again. "Anybody try to kill you?" LSP rolled her eyes. "Pssh, naw. First they were like Raaaah! and then I was like Ahhhh! And then I was like NOT TODAY! and then I was like AHHHHH! And then-" PB started talking. "Everybody made it back unharmed, and that's certain because of the crossbow LSP bought." "Well, at least everypony is safe." "Maybe we can do something to save them!" "Shush! They sense planning!" But it was too late. A changeling pony burst through the window. Finn searched his backpack,which had become a saddlebag, for his sword. He gave it a good swing so it was pointing the evil creatures. "Get the crossbows!" Somebody screamed. Finn couldnt tell because h was so afraid, and he didnt have time to look. He gave the first creature a good slash, but then his sword broke as a muscular one that kept on shouting "YEAH!" battled him. The group was cornered and nobody knew how to go about it! They were ANything But Safe, and they didn't like that thought as they battled by hoof with the monsters, losing by the second.