When filmmaker Sharon Shattuck’s artist dad came out as transgender and changed her name to Trisha, Sharon was in the awkward throes of middle school. The changes to Trisha's appearance were difficult for her straight-identified physician wife to accept, but they stayed together. As the Shattucks regroup in 2013 to plan Sharon’s wedding, the filmmaker asks her parents, who are now going on 33 years of marriage, for advice. From This Day Forward is a conversation about love in a very modern family.