Leo Song is an attorney who sues big financial institutions on behalf of angry investors. His wife, Nora is a fledgling mother of a difficult toddler and is pregnant with a child whose paternity is uncertain. The couple, transplants to San Diego from New York City, volunteers to host a masquerade party to build community among the aloof parents of children at their son's private preschool. An uninvited, masked woman shows up to the party and refuses to leave. She never removes her mask because it covers her deformity, and apparently she speaks no English. Speaking in Cantonese, this stranger, who calls herself Bei Qi, tells Leo that she is his own grown daughter, she has just landed in the States from China, and she needs a place to stay.
While Leo's career hinges on messy litigation involving foreign financial giants, Nora's motherhood is threatened by the intrusion of this supposed daughter. Meanwhile, Bei Qi gets caught up in family and emotional troubles that rattle her plan. And when quiet domestic struggles sustain all the secrets and betrayal they can endure, this family realizes that what is also at stake has the power to change the value of Chinese currency.