When the husband Lillian LeClair has been bound to since World War II takes her on vacation which turns out to be a tour of cemeteries; she is bombarded by glimpses into a mysterious man’s soul as well as memories of her life as a mortal. Once she realizes this mystery man is tracking her, she is frantic to escape. But the phenomenon known as the Calling has her in its grip and Lillian is aboard the runaway train which will inevitably link them.

Famous and centuries-old sculptor Nathan Halbrook is on the receiving end of Lillian’s Call, and is tormented to discover the woman he’s waited years for is the wife of another man. As Nathan and Lillian come face to face, they find themselves embroiled in the puzzling events surrounding Lillian's delivery into immortal life. While the holes of her memory are plugged, a sacrifice is made to keep Lillian Walking and in the arms of her immortal mate.