The pursuit of game leads the young lord and his squire to a descent into a mysterious valley, where among the stones and red moss stands a tower that, according to a superstitious servant, belongs to an ancient witch. The brave monarch strives for adventure and, seeing a knight at the entrance, who turns out to be the missing centurion, rushes down with his sword to the advantage. The king's soldier is in love with evil spirits and, in a fit of jealousy, challenges the master, which he willingly accepts. In the heat of battle, a witch who ran out to hear the noise accidentally dies, and the victorious gentleman rejoices, but his joy turns into horror when the murdered witch appears behind him.