In 1928 Harvard psychologist William Moulton Marston introduces his revolutionary lie detector test, working alongside his brilliant academic wife, Elizabeth. Their research is upended by the arrival of Olive Byrne, a sharp and ambitious student. Initially brought in as a research assistant, Olive quickly becomes an intellectual and romantic equal. As the trio spends long hours together, boundaries blur, and a passionate, unconventional polyamorous relationship forms. They realize they are deeply in love, forging a private
domestic life that defies the strict moral codes of contemporary academia, guided by Elizabeth’s pragmatism, William’s romantic idealism, and Olive’s grounding warmth.When their affair is discovered by university superiors, William and Elizabeth are fired for violating moral standards. The scandal forces the three to relocate, starting anew as an openly unconventional family unit where Olive plays the role of a widowed aunt to the children William and Elizabeth share. Facing financial instability, William transitions from psychology to comic books. Inspired by his wives' fierce independence, unconventional relationship dynamics, and feminist ideals, he invents Wonder Woman in 1941. The character combines superhuman strength with themes of bondage, submission, and matriarchal truth, functioning as an artistic manifestation of William, Elizabeth, and Olive’s shared philosophy.The comic's subversive undertones immediately trigger conservative backlash. Fearing public exposure, professional ruin, and the potential loss of their children, a bitter ideological conflict erupts within the household. Elizabeth, fiercely protective of their family’s survival, demands that William tone down the overtly feminist and erotic subtexts, clashing with Olive, who believes they should unapologetically own their truth. Feeling alienated and overwhelmed by the external pressure, Olive packs her bags and leaves, fracturing the foundation of the triad.Without Olive, the household plunges into a deep emotional crisis, and William’s health deteriorates. Realizing that their love and unity are far more important than societal approval or professional safety, Elizabeth humbles herself and seeks Olive out, orchestrating a poignant
reconciliation. Reunited, the trio rededicates themselves to one another and to the liberating message of their creation. Years later, as William lies dying from cancer, Elizabeth and Olive stand resolutely by his bedside, holding hands. Though the world never knew the full truth of their passionate bond, the film concludes by highlighting how their hidden, revolutionary lifestyle successfully birthed one of the most enduring cultural and feminist icons of the modern era.