You take a role of a teenager who spent most of his life around military bases due to his father's military career. Now, you were entering in last quarter of your senior year, then college would be upon you, and your father decided it was time to move back to your hometown. It's the best chance to have a permanent school and a real life.
In order for you to be able to install this game, you need to enable (allow) installation of applications from unknown sources (Unknown sources) in the phone settings. Usually this item is in the Security section