Ancient Evil: The Guessing Game

Before your grandfather passed away, he left you a key to his attic. He begged you to "uncover the truth", whatever that could have meant... And thats how you found it - an ancient-looking paper with weird symbols on it. Something happend to you when you touched it - it was like a burst of infinite energy rushing towards you. A call for help? A curse? Or a secret too ancient to be remembered by anyone? Whatever that was, it now must be uncovered... No matter the cost.