After nearly two decades, Rayna and Deacon face the facts of their storied and often tempestuous relationship. Scarlett makes a startling self-discovery in between tour dates while Gunnar performs with one of his idols, rock-music legend Sir Elton John, who guest stars as himself. Luke stops by "The View" to trumpet a worthy cause—before a family emergency pulls his focus. Elsewhere, Juliette struggles to make a connection, and Layla launches her album at The Bluebird.