Like all sisters, Molly and Robin Snow share a deep bond that sustains them through good times and bad. In the prime of their lives, their careers are flourishing when Molly receives the shocking news that Robin has suffered a massive heart attack, and the prognosis is grim. At the hospital, the Snow family is informed that Robin may never regain consciousness again. As the family struggles to cope, the complex nature of the sisters' relationship is put to the test, and Molly must find strength she never knew she had.