The film's narrative centers on a chaperone tasked with arranging marriages for three sisters in late 19th-century Madrid, while navigating her own romantic interests. The available information does not include any depiction of LGBTQ+ characters or themes.

The Lady's Companion explores a late 19th-century world of love, scandal, and comic intrigue as a chaperone works to find husbands for three wealthy sisters. The story does not feature any identifiable transsexual characters or themes. The narrative focuses entirely on its period drama elements, without engaging with gender identity topics.

The movie does not contain any action or adventure elements.

The film does not include any characters whose on-screen gender differs from their established gender in source material or historical records. All characters maintain their original gender portrayal.

The Lady's Companion is an original Spanish period romantic comedy series set in late 19th-century Madrid. The characters are newly created for the show and are not based on pre-existing source material or historical figures. Therefore, no instances of race swapping are present.