Lily suffers through a freezing, neglected marriage with Kevin, developing debilitating emotional trauma that manifests in forbidden erotic fixations on Arthur, Kevin's distinguished father. Desperate for psychiatric intervention, she books a private appointment with an esteemed clinical specialist, only to be horrified when Arthur enters the examination room as her attending physician. Trapped in a web of medical intimacy and taboo guilt, Lily attempts to save her marriage, only to overhear Kevin scheming with her half-sister Chloe.
Realizing that Kevin married her solely as a substitute while plotting to commit her to an asylum to seize her trust fund, Lily abandons all sentimentality. She returns to Arthur's clinic, enlisting the authoritative patriarch's backing to expose the deceitful lovers. As dangerous family therapy pushes their personal boundaries to the breaking point, Lily and Arthur unite to strip Kevin and Chloe of every stolen cent.
