Couple's airship journey for a breeding license
In the year 3000, the young couple Paolo and Maria have lived together in a free, childless union of love. They travel by airship across a united world to its capital, Andropolis, where state medical authorities examine them to decide whether they may convert their union into a licensed marriage permitted to have children. The trip is a guided tour of future society, showing reproduction as the one intimate act the state controls, while sexual love itself is left free.