After learning you were adopted you ran away from your home. For 10 years you have been wandering, searching for your place and it was for nothing. Now, you are coming back home but... there is a quite interesting thing you learned. That thing is the reason you are coming back. Hoping that it'll work, you make your way back home to see if those 10 years of hard work will turn into the success you were looking for.
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