On the run from international police, Special Agent Lemmy Caution arrives in the South of France and soon becomes embroiled in a scheme with the infamous gangster Siegella. Whilst seeming to co-operate with the underworld boss, Lemmy is secretly acting for the FBI, and intends using Miranda Van Zelden, a wealthy heiress, as bait to trap a gang of crooks and put an end to Siegella's exploits...

Eddie Constantine
as Lemmy Caution

Colette Deréal
as Constance

Grégoire Aslan
as Siegella

Claude Borelli
as Miranda Van Zelden

Véra Norman
as Susanne, assistant of Miranda

Jacqueline Pierreux
as Dora

Roland Bailly
as Johny

Guy Decomble
as Jacques 'le Dingue'

Luc Andrieux
as Maurice

Émile Genevois
as Siegella's Henchman