This book tells about the beginning of the Crusades and the journey of the Crusaders through unknown lands. The Adriatic Sea was at that time the edge of the Western world, and pilgrims crossing it found themselves in a magical land where any miracles were possible. At the center of the story is the image of a young Englishman who has never left home before. According to this vow, enduring hunger, thirst and being in constant danger, he spends three years in battle and meets victory on the walls of conquered Jerusalem.