The Doctor pulled down on another lever, and sent the TARDIS vworping into the void. As he hanged onto a few bars, Bolin almost fell face first into the control room's grated floor, hanging onto one of the TARDIS' screens:
"What about her?"
"Well, there's more to her than what you know! You see, the Avatar is a symbol of balance! So if you take the Avatar, everything goes kataploot!"
"B-but then the Avatar's reborn, right?"
"I think so! But technically, you could stop the cycle from ever moving on!"
The Doctor pulled down the lever once more, and spun one of the screens around so Bolin could see a picture of his world:
"If you hurt the Avatar when she's connected to the other world, the cycle will stop. And with no Avatar, the balance on your world goes kataploot!"
"... and that's bad, right?"
"Bad! Of course it's bad! Massive hysteria! Dogs and cats living together! Tsunamis, earthquakes, volcanoes! Thanks to spacey-wacey reasons, your world, and the spirit world will both go—"
And the Doctor proceeded to simulate an explosion with his hands and his mouth, which made Bolin pretty scared, as his grip on the screen tightened:
"So we have to stop whoever's going after Korra!"
"Yes, that's right, but who in their right minds would want to stop the cycle? The destruction of your world and the spirit world would create a massive wave of energy! The question is... who wants that energy?!"
Amon continued to observe as the Equalist soldiers continued to load crates of electric gloves onto vans. As the sun set down on Republic City, the Equalists began the next step of their plan. His Lieutenant approached him, holding a small piece of paper:
"Everyone's ready, sir. And one of the benefactors wishes to speak with you."
The Lieutenant moved aside as a small and round creature walked through the shadows, a small blue light in front of it. Amon turned around, his hands behind his back, and did a short bow to the creature:
"Once the troops are ready to move out, the stadium will be ours, sir."
"Good," said the creature, as it rolled out of the shadows, revealing the fact that it was a machine. But not just any machine. One of the most feared creatures of the Universe analysed Amon, and turned its eyestalk to face the troops. "Continue the Equalist revolution!" said the Dalek, spinning his laser gun around. "EX-TER-MI-NA-TE THE AVATAR!"