Captain Thunder and the Holy Grail

During the Third Crusade and under the orders of Richard The Lion Heart, a group of Knights led by the fearless Captain Thunder, overcome the Arab fortress at St Jean d'Acre. There they discover a man who is returning a chalice he claims to be the Holy Grail. The man explains to him that the Grail was cast in remote times, when creatures from the underworld ruled the earth and that Captain Thunder must help him return it to the Guardian Knights before "the sun and the moon become one". An epic action-packed adventure, based on the popular comic series.