Mabel was ready, her courage now at full power as she hung from the stalactite with her grappling hook and got ready to aim her borrowed arrow at any unfound physical weak spot of Supreme MagnaSpider as Hylaeocervopus and Sylvouranis distracted it with direct combat.
"Wow," said Soos in awe, "she's really going for it."
"Looks like all those adventures we've had before have definitely molded her into this," said Dipper, feeling awestruck and happy to see his sister act strong and brave.
"She sure is cool," said Wendy, just at that moment turning her attention to Dipper with a friendly look on her face, "Always trying to do what's right, no matter what it takes. Much like you, Dip." And with that Dipper blushed at the compliment and loving the frequent attention he was getting from Wendy so much lately.
"Perhaps Hylaeocervopus hesitated to see potential within her," said Dryosaicha, "Because look at Mabel now."
As Mabel looked carefully from her hanging position, she had a little bit of trouble focusing on Supreme MagnaSpider since it kept moving as it distractedly fought the two male Elkron. But finally, she saw it, one portion of the massive Spider's middle looked a bit limp as it moved, clearly an injury from a past event.
"Alright, here goes everything," said Mabel as she threw the arrow down, right towards Supreme MagnaSpider's weak body area, "For Gravity Falls, humanity, and cute boys!"
The arrow struck right into the giant Arachnid into its weakest point, cutting through its thick exoskeleton. Feeling the sudden pain, Supreme MagnaSpider screeched in agony, breaking off its fight with Sylvouranis and Hylaeocervopus. Everyone covered their ears from this high-pitched, incredibly painful cry. The sound carried out of the cavernous imprisonment and startled Stan, Candy and the Griffin, who still guarded the entrance. All the MagnaSpiders back on the surface sensed the pain of their leader and heard the screams and paused, abandoning their invasion on Gravity Falls and the other towns to rush to their master.
Back in the cave, the Elkron knew that the entirety of the MagnaSpider swarming horde would be returning to their catacombs in order to help save and heal Supreme MagnaSpider.
"Everyone! Out of the cavern! Now!" barked out Hylaeocervopus.
Mabel made her grappling hook let go of the stalactite and she fell safely into Sylvouranis's arms, which she smiled as token of thanks. Now the four Humans and the three Elkron rushed straight out of the imprisonment as fast as they could. Once they reached the surface, they quickly got Candy, Grunkle Stan and the Griffin to quickly move away from the prison entrance and hide in within bushes. They all now watched as a countless MagnaSpiders swarmed back into the catacombs, rushing to the aid of their now-injured commander.
"So what just happened and what's happening now?" asked Stan, feeling like he should make fun od the MagnaSpiders, "Are those giant Spider-freaks finally accepting defeat and going home to mommy?"
"They are rushing to their leader, Supreme MagnaSpider, who needs medical attention," said Hylaeocervopus, feeling a little hesitant to say who it was that wounded the MagnaSpider commander, "It was struck by an arrow of ours that was oddly wielded by the one called Maple."
"Actually, it's 'Mabel', and yes, I found a weak spot on the Big Bad Bug!" said Mabel in delight, proud of herself.
"It was very brave," said Soos with a smile.
"Very good, Mabel," congratulated Candy.
"That was really neat," added Wendy.
"But, now what?" asked Dipper, "Do we now seal all those MagnaSpiders in this cave-prison? Imprisoning them all over again?"
"Yes," replied Hylaeocervopus quickly, his eyes fixed on the MagnaSpiders, "Since they continue to spawn, they cannot truly be defeated. So we must imprison them, just like how my ancestors did to them centuries ago."
After a while of waiting, the last of the MagnaSpiders entered back into the hole that lead to the underground catacombs. The North American Griffin sensed that the Elkron were going to do something miraculous and backed away a few feet.
"Hey, now!" said Mabel to the Griffin, curiously, "Why do you back up?"
"I think it feels the Elkron about to do something really strange," said Dipper.
"Sure something not strange will happen," said Grunkle Stan sarcastically.
Just then, the three Elkron began to close their eyes, lower their heads, put their hands together, and chant something quietly.
"Dudes, I...think we should all step back," said Soos, feeling in his instincts that something chaotic was going to happen in a moment.
"Right behind you," agreed Wendy, feeling it in her instincts too.
The six Humans and Griffin were staying back away as the three Elkron suddenly stopped chanting quietly and now shouted out in their ancient tongue. Then came forth what they were summoning: a great supernatural wave of power sent to them straight from the spirits of their ancestors in the afterlife. Hylaeocervopus, Sylvouranis and Dryosaicha quickly grabbed long sticks off the ground in front of them, one for each of them, and out of the sky came a streaking bolt of cosmic energy from some nearby dark clouds that seemed to have come from out of nowhere. The bolt of power channeled through their sticks and was then commanded by the three Elkron to blast at the MagnaSpider imprisonment. A new stone seal was magically formed, tighter than the last one, and a new big boulder (torn from the side of a mountain by these ancestral energies) was floated over and placed right on top of the seal. The MagnaSpiders and their supreme leader were once again trapped in their prison/home base, and would remain imprisoned until the end of time (or unless an underground earthquake or collapse might one day crush them all).
The rippling energies then vanished and the cloudy sky began to clear up. "It is over...," said Dryosaicha. Her brother and Hylaeocervopus nodded in agreement. Dipper, Mabel, Stan, Soos, Wendy and Candy then cheered in excitement, releaved that this Dog-sized Spider onslaught was over. The Griffin felt happy too and playfully nudged Mabel.
But what of all the captured Humans back in town wrapped in web? The group had to find out.