Convincing Werner Herzog to narrate a film is no easy feat, nor is persuading Kjartan Sveinsson from the Sigur Rós band to make the music for you. The great summoning power of Ramin Bahrani is partly explained by the denunciation that this film openly displays. In it, Herzog tells us, in his beautiful English, the story of a plastic bag that sails through the air in a mad love race in search of its creator, which ends in harsh criticism of a world and an ocean that is increasingly polluted. It is a journey through the air that takes us to the depths of the human being. The air is not as clean as it appears to be.