Your hero was not justly convicted of a crime that he did not commit, and he was sentenced to life imprisonment in the most severe prison.

Now he has to deal with the fact that his prison is not the place to escape from, but a place where he has to serve his sentence.

To escape from prison, your hero has to create a plan that will be executed in a way that no one will be able to detect it.

Your hero needs to find his accomplices to help him escape, find ways to destabilize the prison so that it would be easier for you to get out of it.