Fred eventually returns and beats the convicts, only to force the entire family to engage in incest as revenge for the daughters humiliating him earlier.

Their daughters, Martha (Susan McBain), Jane (Nancy Dare) and Beth (Marlene Willoughby), also live on the farm as well as a farmhand named Fred (Bill Cort).

The convicts (with their leader, George, played by Spalding Gray who would later become famous for his mainstream acting and monologue work) continue on to the parents' house and stop them in mid-intercourse.

The entire plot is then fast forwarded in reverse chronology, until it is revealed this was all a daydream that Fred was having while he was being urinated on by the farmer's daughters after they finished gang-raping him.

AVN's Mike Desert gave a triple feature containing Farmer's Daughters and fellow Zebedy Colt films Virgin Dreams and Sharon a 4 out of 5, and wrote that it was "chockfull of enough rough sex, rape, murder and incest for those who forget 'golden age' isn't always synonymous with 'tame'.

called Farmer's Daughters a "grizzly pornographic take on the home invasion/Last House on the Left style of horror film" that was an uncomfortable viewing due to its sleazy and socially irredeemable content, and "rough, primal and at times almost amateurish feel".

[4] Jason Christopher of Film Dick deemed Farmer's Daughters a "puke-inducing" parade of bad taste that "sullies the good name of porn" and could only be arousing to the most askew of viewers.