For the past 100 years, South African prisons have been host to a tightly organised criminal gang network called "the numbers". Based on a hierarchy of violence, the fraternity has a mystical reputation among convicts and inspires lifelong devotion in its members. In the years since the end of apartheid, the now non-racist prison authorities have been attempting the audacious feat of breaking the numbers system. In this documentary, members break their silence for the first time to reveal the gang's inner workings.