France, 1983. The biggest architectural competition in history is launched by the new socialist president, François Mitterrand. Coveted by all the biggest international architectural firms, the open-call competition is surprisingly won by an unknown: Johan Otto von Spreckelsen, an architecture teacher from Copenhagen. Until then, the fifty-year-old Dane had built only four buildings: his home, and three small chapels.

Claes Bang
as Johan Otto von Spreckelsen

Xavier Dolan
as Jean-Louis Subilon

Swann Arlaud
as Paul Andreu

Sidse Babett Knudsen
as Liv von Spreckelsen

Michel Fau
as François Mitterrand

Jean des Forêts
as Alain Juppé

Micha Lescot
as Leloup

Alessandro Bressanello
as Marble man

Ilaria Cabras
as Marble man's daughter

Viilbjørk Malling Agger
as Architect student