Carolina, an aging local grande dame who works at a crossing point on the titular river, marries another late-in-life character, the dredging-boat operator Antonio. Not long after their union, she becomes intensely jealous of Antonio's fondness for their winsome goddaughter, Joana, and insinuates herself into a relationship brewing between Joana and a mystical gypsy gold salesman. Soon, tempers are flaring, mystical secrets are being revealed and death is hovering over the central characters.

To attain knowledge, man and woman had to be willing to give up their innocence," says Boris Lehman. Life Lesson is a poetic and philosophic reflection on the theme of paradise lost. Some fifty persons illustrate the planet's convulsions and the world's vacillations. Trying to communicate, to commune with the invisible, they cry out, sing out, give out messages, each in their own way, in their own state of solitude. These are like multiple echoes that resemble waves in the water or stars in the sky. " Behind these images and sounds that have been stifled by today's society, Lehman hunts for noises, cries, songs, messages that go astray. He says that if we look at the invisible we may hear the words. He invites us to look beyond the appearances of social life and to vibrate in tune with life's polyphony that is all around us."

Shot in Martinique, with the evocation of several texts, namely by Aimé Césaire.