Julie Garner is a pregnant, thirty-something wife who longs for a child. But a heart condition means any pregnancy may result in her death. Drs. Hunter and (Belasco?) present the couple with an alternative: Would Mrs. Garner be willing to allow them to transplant her present embryo into another woman's uterus? Mrs. Garner nominates her kid sister to be the surrogate, and the operation is a success. But, in short order, the sisters fall out.