When a group of Nationalists use an ancient artifact to bring a villain from Arthurian myth back from the dead to gain power, ex-monster hunter Bridgette McGuire escapes her retirement home and pulls her unsuspecting grandson Duncan, a museum curator, into a world of magic and mysticism to defeat a legendary threat.
Beowulf’s arrival was an unexpected one and now that the smoke has cleared, Gran and Duncan are beginning to wonder what other surprises lurk around the corner. Meanwhile in the Otherworld, Merlin is up to his old tricks and crossing over with another story was just the beginning of his plan...