The application "opens" portals to the past of the city of Stavropol. With the help of augmented reality technology, you can "look" into the past of the city and learn about the adventures of the main characters who accidentally used the application. You will walk around the Stavropol fortress, go down to the powder magazine. Having moved to the past, the main characters meet the inhabitants of bygone times and talk with them. You can listen to these dialogues. Not everything goes smoothly. At some point, there is a meeting with a stern soldier from the Stavropol fortress. The main characters are in a dungeon. The denouement of this story is completely unexpected. The real owners of the application come to the guys home ...