Richard and Guy Lemieuvre Royer do a clinical study in a country where nurses provide very special services for (presumably sexually dysfunctional) male patients (Dominique Aveline and Jacques Gatteau). They pursued the two sisters in Paris and find them trying to hide in the apartment of a client. There they find Elizabeth Bure who welcomes them with open legs. Nurses (Karine Gambier, France Lomay) listen at the door, and then break in and chloroform the men. A third nurse (Morgane) joins them for a lesbian session with Elisabeth Bure. All of them return to the clinic where nurses capture the minds of two investigators with a blow job as well as measuring their blood pressure, but not in the usual manner. General sexual mayhem is initiated by the head nurse Cristel Lauris, during which Cyril Val finally satisfies his wife.