On her thirteenth birthday, Amanda Black receives a letter signed by her parents,who had disappeared a few months after her birth. The letter sets her a mission: "You are the last of our line. The last Black. If you want to know what your inheritance is, you'll have to find it out for yourself, and to do that you must take possession of Black Mansion, which was once your parents' home but is now yours. There you will find all you need to  discover who you really are". Amanda Black undertakes the mission to find the lost answer. Black Mansion is in danger. It is the only thing her parents left her. She must save it at any way she can. But how is what worries her…