In 1960s America, full-time housewife Claire discovers that her husband, Grant, is having an affair. Rather than succumbing to hysteria, she secures a job at the jewelry store where his mistress, Ivy, works—all the while quietly gathering evidence of her husband’s betrayal. Once bitter rivals, the two women eventually form an alliance after witnessing the full extent of Grant’s selfishness and calculated schemes. As Claire fights for custody of her son and a fair share of the couple’s assets, she and Ivy join forces to shatter the facade of respectability Grant has carefully maintained; together, they launch their own jewelry business, reclaiming their lives and forging a new path forward.