Belgrade, April 6th, 1941. 6:30 AM. It has begun.
Go back to past and discover forgotten places in Belgrade. Choose one of three categories and solve the tasks, to know which locations to go to. If you manage that, when you check in at one of these locations, it will show up on the map. Otherwise, you have to keep searching.
Every task has the option of extra hints. Don't give up if it seems to difficult - the answer can be easily found by a small research. The device you are playing with can help you in using and researching about the hints.
When you solve every location, you will also get a part of a secret map that conceals the ultimate location that you have to visit and find the last hint. Play and become the Belgrade Victor.