Three husbands have a routine where they go away together each year to what they tell their wives is a business convention, but is actually a sex resort. What they don’t realize is that their wives aren’t exactly sitting around doing nothing while they’re gone .
A beautiful and vulnerable girl is confined in a mental institution due to a radical personality disorder, which makes her alternate between being the demure good girl Susan and the tough and shameless Sandra. A sympathetic psychiatrist, Mark, will try to get Susan out of her fragile and frightened shell.