On her 20th birthday, Edwina Margrave receives a package from her grandfather containing a broken stone and a cryptic letter dated 10 years ago. She returns to Margrave Manor, only to find that her grandfather has been missing for all of those 10 years. Now she must search the mysterious old house room by room, searching for clues that might explain his disappearance. Can she find all the pieces to unlock the secret room? And if she does, will it uncover the secret of Margrave Manor?