Was slated to be filmed between March 2nd and March 24th 2020, but production was interrupted midway through due to France's national lockdown in response to the COVID-19 pandemic. It was able to continue and finish later that year from June 18th to July 6th.
In Belgium and Switzerland, the film was aired in its two part, 92 minute version, while in France it aired in the one part 89 minute version.
Spanish title: "Sobre las nubes".