Herbert Lemon and Violet Parma are caught up in an adventure concerning a legendary sea-monster when they try to find out what happened to Violet's missing parents. Who will uncover the secret of the malamander? In the basement of the Grand Nautilus Hotel, a mysterious girl crashes into Herbie Lemon's room and cries, "Hide me!" In the window of the Eerie Book Dispensary, a mechanical mermonkey sits and waits. And out beyond the pier, something stirs. Could the legendary malamander have returned?