Sisters Irene Frederick and Louise Williams have barely spoken to each other since the death of their mother. Irene had given up everything to take care of their aged mother while carefree Louise lived it up in Florida. At their mother’s graveside, Irene makes one demand. To console her sister and assuage her guilt, Louise agrees to a secret pact which is sealed with a promise. Being miles apart, Louise thought the pact would be forgotten. After being diagnosed with a terminal illness, Louise receives a call from Irene’s daughter. Irene needs her. She is forgetting too much. And now, Louise needs her sister, too. Can Louise leave Florida and a prospective husband to fulfill the conditions of the pact without raising suspicions from Irene’s daughter and friends? Does she even want to? The sisters know only one thing to be true; promises hold for sisters.