Where the hell is Ba Sing Se?

In Ba Sing Se's Royal Palace dungeon:

The last airbender, the avatar. The worlds last hope for peace. The waterbender was sleeping by his bed. After taking Aang from beneath the city Katara had tried to find her brother Sokka. However he had found her, he'd broken out of Dai Li imprisonment with Toph and the Earth King. With Aang out of action it didn't take long for them to be recaptured. They were taken to the dungeons beneath the Royal Palace and left there. The young woman suddenly gasps in her sleep, reliving the moment Aang is struck, over and over in her sleep. A single tear falls down her cheek.

Back beneath Ba Sing Se:

For once the quintet was speechless. They all looked at each other, wide eyed. Ally was the first to break the silence "How exactly did we do that?".

"I have literally no idea, one second I was looking at these guys" Georgia says while pointing at the two men "the next I was doing that, I was fully aware of what I was doing; I'm just not sure how i knew how to do it".

"Yeah, that's how I felt too" Zac agreed, Bekah and Ally nodded in affirmation.

"So no we're all what, superheroes?" one of the robed men snickered at Marc's comment.

"Something funny?" Zac barked at the man in question.

"you think you're superheroes because you can bend?" he said with a smirk on his face "there's benders everywhere".

"Bending?" asked Bekah.

"Didn't you hear my colleague the first time? BENDING!" the second man snapped.

"Where are you people even from? Not knowing what bending is, you did it pretty well for people who haven't heard of it before" the first man said. The group all looked angrily at the two men, just about ready to strike again.

"Okay guys, just calm down." Marc said firmly, but to his friend's surprise, quite calmly. Now giving his attention to the two men "now, you two, I don't think you're in any position to get smart, tell us exactly where we are and who you are"

Also surprised by the teens apparent calm the second man was the first to talk. "You are in the city of Ba Sing Se, now under fire nation control. We are agents of the Dai Li. Now why don't you tell us who you are and why exactly it is you're down here"

This time it was Bekah who spoke, breaking her quietness. "My names Bekah, this is Marc, Georgia, Zac and Ally" she said pointing to her friends respectively "and we have no idea why we're down here"

Ally, now pushing her way into the conversation "and where the hell is Ba Sing Se, also, who's the fire nation?"

This time the first man retorted "How can you not know where Ba Sing Se is, your directly beneath the city. And how can you not know the fire nation? They've been waging war against the world for the past 100 years. Where are you from? Another world?".

"I think that's exactly the case, a completely different world" Zac said in complete surprise.

"HOW CAN WE BE ON ANOTHER WORLD? And suddenly have these powers?" she half shouted, sounding scared.

"I'm not sure, what we need to figure out, is to how to get home. And more importantly, can I bend?" Marc blurted out, sounding too excited. Thinking about it, something clicked in his mind, he raised his arms, finding water following it. Then he took an earthbending stance and pulled up a pillar or earth. Following from this he made a ball of air sent it flying to the ceiling. Finally he punched at the air, sending a fireball into the wall. The two men looked at this, jaws dropped.

"How can it be, we defeated the avatar a few days ago. You're a teenager, how could that happen?" one of the main said in shock.

Almost immediately after saying this the ice keeping the first man trapped shattered and the man in the ground came flying out. Looking around the group noticed more dark robe clad men had appeared and set free their fellow men. "Well where did they come from?" Bekah exclaimed.

"I don't know, but there's too many, we have to get out of here" Zac said, eyes wide.

"I'm on it!" Marc said while running to the side of the room and opened up a tunnel. "Come on!" Marc gestured to the others, pointing at the tunnel. Making sure everyone got in he sent a large wave of water to the large group of Dai Li while Ally closed up the tunnel.