The scenes set in Buenos Aires Ecological Reserve were filmed on a Monday (when the place is closed to the public) through a filming permit.
The bird that Berna and Martín recorded at the beginning is a woodpecker.
In the movie, Berna, Dave and Morton must find a new idea for a TV themed final assignment of their film school, after they are forced to abandon the original idea. Actually, Bernabé Fernández, David Vazquez and R. Patricio Díaz, who studied together in a film school, should manage to complete one of their assignments, after the place where they made their recordings, close its doors without notice. These events gave to R. Patricio Díaz the idea for this film.
The first scene was filmed in three different ways, with Agustín Gorostiaga saying his lines in Spanish, English and even Portuguese. The English version made it in the final cut.