The film is a second part of trilogy dedicated to the elements, started with 'Undine'. 'Afire' is about fire, whereas 'Undine' is about water. Felix's portfolio dedicated to 'water' is a nod to the previous film
The movie's original title, "Roter Himmel", is actually 'Red Sky' in English.
Christian Petzold began dreaming up most of this film during his battle with COVID-19 in March 2020.