The story is based around "spermulites", the alien inhabitants of a dying planet. The only way they can save their planet is by sucking the men of planet earth dry of sperm, kind of like horny vampires.
Spermula
Dayle Haddon
Werner
Udo Kier
Tristan
François Dunoyer
Cascade
Jocelyne Boisseau
Gromana
Ginette Leclerc
Blanche
Isabelle Mercanton
Grop
Georges Géret
Ruth
Radiah Frye
Gilda
Angela McDonald
Diamant
Suzannah Djian
Bonne
Myriam Mézières
Sala
Karin Petersen
Liberte
Valérie Bonnier
Sylvie (as Sylvie Meyer)
Sylvie Matton
Diana
Diana Chase
Cardinal
Christian Chevreuse
Pierre
Hervè Hallf
Choupetit
Alain Flick
Luc
Benny Luke
Petit Curé
Gérard Tardy
Roxiane
Roxiane De Montaignac
Dominique
Dominique Basquin
La Vieille Dane
Maud Darsy
Rita
Marie France
Joan
Joan Kohler
Caline
Aline Ruat
Celine
Céline La Frenière
Annette
Annette Deweger
Marie-Jo
Viveka Grey
Natacha (as Natacha Knudsen)
Vibeke Knudsen-Bergeron
Francis
Francis Rignault
Piéral
Little girl (uncredited)
Éva Ionesco