You are a 11 year old boy.
Your family-meaning mother, sister, and father are said to be dead, so you go to live with your grandmother.
You learn things from her, such as about your family, where they are buried, etc.
Then something horrible happens.
She dies.
From now, you will have to survive your everyday life, manage to fly a plane to where your family resides, and unlock secrets of your past.
