Set in 1973, a young couple, Daniel and Lena become entangled in a Chilean military coup at a time when there is much protest on the streets against General Augusto Pinochet. Daniel is abducted by Pinochet's secret police and Lena tracks him to a sealed off area in the South of the country, called Colonia Dignidad, which presents itself as a charitable mission run by a lay preacher, Paul Schäfer, but is in fact a place from which no one has ever escaped. Lena decides to join the cult to attempt to rescue her husband.