Ring of Fire is based on the book Anchored in Love: An Intimate Portrait of June Carter Cash, written by John Carter Cash, the son of June and her late husband Johnny Cash.

The film also stars Matt Ross (American Horror Story, Big Love) as Johnny, Frances Conroy (Six Feet Under) as June's mother Maybelle Carter, and John Doe of punk band X as A.P. Carter, June's uncle. The film was directed by Allison Anders.

Maybelle and A.P. (along with Sara Carter) were the three founding members of pioneering country group the Carter Family, who first recorded in 1927. June and her sisters Helen and Anita recorded with the Carter Family as kids, and later toured with Maybelle as Mother Maybelle and the Carter Sisters.

Ring of Fire follows June from her Carter Family days on up to her marriage to Johnny Cash, including her battle to get him back on the straight and narrow.