Love at the Top (1974)

Original title: Le Mouton enragé

(And How to Get There)!

Nicolas Mallet, an inconspicuous and shy bank employee, one day successfully invites Marie-Paul, a young woman he hadn’t known before, in the streets of Paris to a café and sleeps with her the next day. When he tells his surprised friend Claude about the incident, the disillusioned and handicapped writer starts to guide him, leading Nicolas on a dazzling social ascent.