Transgendered landscape painter Einar Wegener and his transition into a woman named Lili Elbe provides the basis of this sumptuously filmed drama, important because it is one of the first sex reassignment surgeries to be performed that would change the male sex organs into that of a woman. Set mostly in Copenhagen of the 1920s, we find Einar married to a less successful portrait painter, Gerda, who asks her husband to pose in women's dress and stockings to that she may finish a portrait of a ballerina. The moment becomes an epiphany for Einar, who soon begins to dress in Gerda's clothing, and even begins attending public functions as Lili Elbe, Einar's cousin (in real life, Lili would often claim to be Einar's sister). Soon after, Einar begins to feel that Lili is who he really is all along, despite the pleas of his suffering wife, and aims to make the transformation into a woman complete by undergoing a complicated and still experimental surgery in France to finally become Lil in every detail.