Psychiatrist Jack Mickler dissuades a would-be suicide – the 21-year old, costumed like Zorro claiming he’s Don Juan, is held for a ten-day review in a mental institution. Mickler, about to retire, insists on doing the evaluation and conducts it without medicating the youth. “Don Juan” tells his story – birth in Mexico, the death of his father, a year in a harem, and finding true love (and being rejected) on a remote island. Listening enlivens Mickler’s relationship with his own wife. As the ten days tick down and pressure mounts on Mickler to support the youth’s indefinite confinement, finding reality within the romantic imagination becomes Jack’s last professional challenge.