The plot of "Scenes from a Marriage" unfolds over six distinct chapters, chronicling the disintegration of Johan and Marianne's ten-year marriage. The story begins with them being portrayed as an ideal, affluent couple in a magazine. This facade quickly cracks. In the second part, 'The Art of Sweeping Things Under the Rug,' Marianne discovers she is pregnant and, after a tense discussion, decides to have an abortion, a key indicator of her deep-seated ambivalence.
The central turning point occurs when Johan calmly announces he is in love with a younger woman, Paula, and is leaving immediately for several months. This revelation shatters Marianne's world and initiates their painful separation. The subsequent chapters detail their acrimonious attempts to navigate the divorce. Their interactions oscillate wildly between nostalgia, tenderness, vicious verbal attacks, and, in one harrowing scene, physical violence, which culminates in a shocked Johan finally signing the divorce papers.
The ending provides no simple resolution. Years later, both Johan and Marianne have remarried. They meet secretly to begin an affair with each other. In a friend's country house, away from their new lives, they achieve a new kind of intimacy built on shared history and a brutal understanding of their mutual flaws. Marianne confesses a long-ago affair of her own, and after she awakens from a nightmare, Johan comforts her. He tells her they share an imperfect but real love. The film concludes with them in a quiet embrace, 'two lonely people' who have found a complex, undefined connection in the ruins of their marriage, suggesting their bond is permanent but can only exist outside of any formal structure.