When he investigates his daughter's disappearance, a bookseller discovers an underground society, living literally under the streets of Paris.
Pierre Tchernia
Director
Michel Serrault
Jean-Paul Rondin
Philippe Noiret
Gaspard de Montfermeil
Michel Galabru
Le commissaire Lalatte
Charles Denner
Ministre des travaux publics
Prudence Harrington
Miss Pamela Pendleton-Pumkin