François Grosjean

Having lost her job, Beatrice accepts from a friend, an unhappy businesswoman, an indelicate little job: to put a certain Paule Caret, who is said to be a drug dealer, on the phone. Seduced by the voice of the latter's lover, Beatrice tries to meet him...

Presented as if it were an archive from the beginning of the 20th century, like a Pathé newsreel, this film tells the story of the life of Etienne-Jules Marey, the 19th century pioneer of photography and cinema, famous for studying animal and human locomotion.