Francis and Blake Falls are Siamese twins who live in a neat little room in a rundown hotel. While sharing some organs, Blake is always fit and Francis is very sickly. Into their world comes a young lady, who turns their world upside down. She gets involved with Blake, and convinces the two to attend a Halloween party, where they can pass themselves off as wearing a costume. Eventually Francis becomes really ill, and they have to be separated. They then face the physical and mental strains that come from their proposed separation.
Twin Falls Idaho is a 1999 independent drama directed by Michael Polish, who co-wrote and co-stars in the film with Mark Polish. It premiered at the 1999 Sundance Film Festival and was acquired by Sony Pictures Classics, who gave the film a limited release on July 30, 1999.