In the opening act, Paul Javal is a French playwright who accepts an offer to rewrite the script for a film adaptation of The Odyssey, directed by the legendary Fritz Lang. Paul sees this opportunity as a means to advance his career, despite the commercial demands being placed on the project by the abrasive American producer Jerry Prokosch. The assignment takes Paul to the beautiful vistas of Capri, but the idyllic setting is at odds with the brewing discord. His wife, Camille, accompanies him on the trip, but their marriage begins to unravel against the backdrop of the film production.

Camille begins to harbor doubts about Paul's integrity and his commitment to their relationship, feelings that are exacerbated by the suspicious attention she receives from Prokosch. The couple's tension is amplified by their inability to communicate effectively, leading to a series of misunderstandings and confrontations. As the trio navigates the intersection of art, commercialism, and personal relationships, Camille's contempt for Paul grows. This emotional distance threatens to undermine not only their marriage but also Paul's sense of self and his career.