Napa Valley winery heiress Eleanor prefers a quiet life out of the public eye, entrusting daily operations to her husband Arthur. Behind his image as a doting protector lies a bitter grievance: he blames Eleanor for their childless marriage, unaware that a medical condition makes him biologically infertile.
When an automated seat-sensor alert reveals traces of another woman and child in Arthur's vehicle, Eleanor investigates the secret trips. She discovers Arthur is preparing to adopt his mistress's young boy into the estate trust, completely blind to the fact that his manager fathered the child to loot the family fortune. Eleanor gathers medical records and vehicle logs to dismantle the conspiracy.
