Eighteen-year-old Jewish twin sisters Adina and Tovah are complete opposites. Adina is a viola prodigy, while Tovah is a brilliant student pursuing her dream of going to medical school to be a surgeon. But both anxiously await the results of their genetic test that determines whether they inherited their mother's Huntington's disease. When the results come back, one twin is negative for the disease, the other is positive. The news pushes the twins to come to terms with their mother's illness, their faith, the future, and their relationship with each other.
