Unit 25 is an observational documentary which follows the process of Simon Pedro's adaptation and indoctrination to the religious regime which is tried to be imposed upon him as a kind of transaction. Simón Pedro, an 18-year old inmate, is transferred to Unit 25, the only prison-church. Unlike any other Argentine prison, there are no murders or rapes here and everything is clean. Nevertheless, in order to enjoy these benefits, the two hundred and fifty inmates are forced to convert to Evangelism through an intensive and extenuating religious indoctrination.