Letter carrier Eva is in her late twenties, unmarried and the mother of a twelve-year-old son. She falls in love with Jon, a bargeman who is unfortunately already engaged.
An extended dream sequence presents a biblical allegory about the creation, downfall and rebirth of humanity, told through a series of surrealistic vignettes and musical numbers.
Reluctantly, a sulky adolescent returns to her parents' house for yet another boring summer vacation, dabbling in desire and the art of desirability, eventually mixing reality with vision, caged fantasies with the fierce female sexuality.