Unprepared for what they discover beneath the castle, Gwen and her twin brother Edmund race against time to save their home and prevent a war. But what other dangers are lurking under ground in the dark and ancient caverns besides the enemy soldiers? Can the twins convince the King's men it's all real and will Edmund be in time to save his sister from a sinister fate at the hands of the evil Gort...? Beautifully illustrated and written in a classic style with charming characters, suspense, and a hint of danger, this story will entertain children of all ages.