In the belly of the whale.

Like an electric sound, the portal appeared in a certain corner inside what seemed to be a laboratory of some sort. As they all emerged from it, it disappeared and now they observe the environment to be sure there weren't any threats.

"Clear"

Walter said,

They moved quietly towards a passage and now they could hear voices speaking in a language they couldn't understand.

"Demon language. We were right."

Feng whispered from his position.

The lab was bright, and the see-through glasses that demarcated each room were large. 

They ducked to avoid being seen.

"What are they saying?"

Titrus asked,

"They must hurry to finish up the project"

Stephan replied in a low voice.

"Oh wow, I forgot you aren't so different"

Merlin said,

" Whatever we need to do. We must act fast. Seems they're expecting someone. Their master"

Feng said,