Shortly after the end of the Second World War, Josef Mengele, the Nazi doctor who had practiced in the Auschwitz extermination camp, managed to escape from Germany. With the help of SS soldiers and the support of wealthy South American families, he went into hiding in Argentina. From Buenos Aires to Paraguay, with stops in the Brazilian jungle, the so-called Angel of Death organized his methodical disappearance and escaped any form of trial.
A young autistic museum guide lives by a strict routine — until he falls in love with his coworker and must confront a whirlwind of new, intense emotions.
Roque Waterfall leads, at age 30, an unproductive life living off a small family inheritance that leaves him enough free time to wander around in the nights of Buenos Aires. One day he meets Hans, a German intellectual who will try to make a documentary about Roque and people like him, people who do nothing.