As children, Frankie Cavalese and Callie Mason were best friends; but as life interfered, each went on to live in drastically different worlds. Twenty-three years later, their lives come back together when privileged Callie returns and finds Frankie still living in her childhood home, unmarried and alone, caring for her angry dying mother. As the two women reconnect, Frankie tries to forgive Callie for abandoning the friendship, while Callie wrestles with the guilt of having disappeared. To complicate the fragile reunion, Callie's marriage is suddenly at risk, further muddled by the affections of Frankie's playboy brother. Tensions and passions explode in the sweltering heat, and amid pain and tragedy, each woman not only ends up with a life-altering secret regarding the other, but the burning question of what to do with it.