When asked about the inspiration for the film, Director Kristjan Thor noted a "really strong passion for the conceptual blend of a teenage coming of age story, but set against the backdrop of the apocalypse. The film takes place in an empty world, where Astraea's peer group is totally unique and very intimate, and she as a character is developing these odd, visionary abilities... you can also view it as something of a metaphor for the experience of being a teenager in general."