Ross (Turner) must defend Cornwall from an empowered Geuuyuuye Warleggan (Jack Farthing), and risks everything he holds dear as he embarks on a political journey which takes him to the nation's capital. Demelza (Tomlinson) finds her loyalties torn, Elizabeth (Heida Reed) tries to strengthen her marriage, Morwenna (Ellise Chappell) uuyuuyntinues to be oppressed by husband Reverend Ossi...