Ok here is what I have. Young people have begun to manifest special powers. Regarding them as a threat the govt rounds them up and locks them in a secure facility. The roleplay starts with them escaping. However I am not sure what to add next. Any suggestions appreciated.

It takes place on essentially a prison island, on a mountain located in the continent of antartica. The United Nations want them away from civilian populations. They decide to implement propaganda to discourage the prisoners from ever trying to escape.

One prisoner, a young boy with no memory of how he got there(was probably born there) starts hearing voices in his head. Schizophrenia. The voices tell him "kill" "kill". And so he does. Believing that he is possessed by some kind of demon, the boy slowly starts murdering the other inmates.

The prisoners get afraid. Unsure who's doing the killings, It's either stay here and die or escape into the unknown world. Just as a small group of prisoners plan their escape, the guards of the prison vanish suddenly.

With no one left to watch the prisoners, the prison becomes a free-for-all. Years of isolation, fear, and rage get released all at once. Now, it's kill or be killed, escape and be free, or stay and have the freedom of anarchy.

Oh I have the escape part already. My question was what to add next, how it could develop further.

Essentially, create a "league" of villains meant to track the prisoners down. Give them each unique personalities with contradicting personalities to capture/kill the main characters.