(Your characters are with the American group, right? Right. So, Firestein is the bad guy now, though we kind of bounced around as to whether that was true or not. He is taking Inhumans and locking them up in this high-tech prison because he thinks they will drive the Originals (normal people) to extinction. He thinks this because the Inhuman Gene is dominant.
So basically Firestein is to Hitler as the Originals are to the Arian race. At least in his mind.
So his hideout is beneath the police station, and right now we are taking the elevator down to his lair. Gage wants to talk some sense into him, Misty wants to kill him, ect, ect.
There is another group in the lair that is on our side. Their names are Janet and Barnes. Janet is Noel/Leona's mother, and Barnes was involved in the Tenement Hall scene.)