"In this second book in the Knights and Bikes series, best friends Demelza and Nessa are always up for adventure. After all, what else is there to do on the sleepy island of Penfurzy? The two girls have discovered a magic world of myth and legend in a submerged castle just off the island, and now, accompanied by their pet goose Captain Honkers, are on a quest to help a headless knight (or rather, a knight who is JUST a head) find treasure. They set off on their bikes and explore both the everyday and legendary worlds, encountering everything from a sullen bully named Connan, to a ghost train, to an ancient tomb beneath a shuttered amusement park. Along the way the two girls will become braver and even closer friends!"--Provided by publisher.