The book is based on amateur films, shot by the architect Ernest Weissmann (1903-1985) with a Pathé Motocamera in the years 1929-1933 at, among other places, the Atelier Le Corbusier and Pierre Jeanneret. These films capture moments from Le Corbusier's life that have never been seen before. It also documents his friendships with Pierre Jeanneret, Josep Lluís Sert, Charlotte Perriand, Norman Rice, Kunio Maekawa, Sigfried Giedion and others.