American fantasy adventure following a young farmer named Jack (Kerwin Mathews) who becomes the protector of a princess. In an attempt to overthrow the kingdom, evil sorcerer Pendragon (Torin Thatcher) hatches a plan to kidnap Princess Elaine (Judi Meredith) using giant Cormoran. Jack kills the beast, saving Elaine, and her father, King Mark (Dayton Lummis), requests that her rescuer safeguards her on a journey across the ocean. Pendragon sends his witches after them, however, and the princess ends up in the wizard's clutches once again. With help from friend Peter (Roger Mobley), Viking Sigurd (Barry Kelley) and leprechaun Diaboltin (Don Beddoe), Jack makes his way to Pendragon's castle to rescue Elaine.