All Harriet Szász has ever known is life onstage with her sister, Josie. As “The Sisters Sweet,” they pose as conjoined twins in a vaudeville act conceived of by their ambitious parents, who were once themselves theatrical stars. But after Josie exposes the family’s fraud and runs away to Hollywood, Harriet must learn to live out of the spotlight --- and her sister’s shadow. As Josie’s star rises in California, the Szászes fall on hard times. Striving to keep her struggling family afloat, Harriet molds herself into the perfect daughter. She also tentatively forms her first relationships outside her family and begins to imagine a life for herself beyond the role of dutiful daughter that she has played for so long.