Miles apart, Molly and Lily become pen pals at 4th grade, continuing to write to each other throughout their lives. Things change however when Molly shows up at Lily's 25th Birthday, with an intention of taking over Lily's life.
Emma, the lucky recipient of a recent heart transplant, sets out to find the identity of her donor only to learn that it was her estranged cousin and may have been the victim of murder.