Gwen becomes the traditional damsel in distress when she is snatched from Camelot and locked in a dark tower, so Arthur mounts his trusty steed and sets out to rescue his bride, accompanied by Merlin and his loyal knights. However, her kidnapper is none other than Morgana, who has imprisoned the queen in a place that haunts the dreams of men. Before them lays a landscape riddled with hidden dangers, perilous obstacles and magical beings — but surely, the sorceress wouldn’t have made it quite that easy? (TV Guide UK)