Acclaimed French filmmaker Eric Rohmer adapts author Honoré d'Urfé's classic 17th century novel to craft this morally complex tale of romance concerning a young couple about to be betrothed, but driven apart by a tragic misunderstanding. Celadon (Andy Gillet) and Astrea (Stéphanie Crayencour) are deeply in love.
Each has vowed that they want to spend the rest of their lives together, but their future union is suddenly thrown into question when one day on the riverbank Astrea sees Celadon kissing another woman.
Subsequently banning Celadon from her sight forever, the inconsolable Astrea is horrified to discover that Celadon has attempted to take his own life by leaping into the river after learning of the decree; fortunately, he was saved at the last minute by an upper-crust young woman (Véronique Reymond) who wants to possess him.
Desperate to win Astrea back, Celadon accepts the advice of a druid priest and his niece, who convince him to dress in drag, pose as a woman, and strike up a friendship with Astrea. Before long, the two are kissing, holding hands, and napping together -- with Astrea little recognizing her new best friend's real gender or identity.