Crystal Guardian

Two 19 year old twin brothers whose father had died before they were born. After they got to their grandmother's house after attending her funeral they found a book that was in the possession of their recently deceased grandmother. They soon find out their grandmother, mother, and father were not who they thought they were. And the book wasn't just an ordinary book. The book is a very important one and it contains the whereabouts of three magical crystals, however the book is sought out by many people and unworldly creatures. On their journey the two boys meet many new friends and foes, but they do not know which is which. Will the boys survive the journey or will they perish from unworldly monsters.