The Chilean coup of 1973. The masses are out on the street, protesting against General Pinochet. Amongst them, Daniel and Lena, a young couple, which, like many others, get arrested by Pinochet's secret police. Shortly thereafter, Daniel finds himself trapped in a secret interrogation camp located underground, beneath the infamous Colonia Dignidad, a German sect following the leadership of the notorious Paul Schäfer. The Colonia presents itself as a charitable mission but, in fact, it is a place nobody ever escaped from. Desperate to rescue her boyfriend, Lena joins the mysterious cult, hoping to find Daniel there and making their way out. They eventually embark on a dramatic escape.