Lítalo se tam vzducholodí

What is hiding behind the walls of the closely guarded building near Smržová u Hradce Králové? The town's residents have lived with indifference to the goings-on at the facility at their backs. The filmmaker provoked a debate which led to new information, rumors, and fantasies that have accumulated for years around the functioning of the place. (Ji.hlava International Documentary Film Festival)