In the year of 2071, weapons more powerful than any others, were lost to the years. This was right before a nuclear war. Everything was destroyed but a small amount of humans and the powerful weaponry. Then, in the year 1027 After Common Era, these weapons were located. You take one of the last helicopters existing on Earth to retrieve them, and when you get there, you see an jet landed next to the site. You take some weapons from the helicopter and run out to retrieve the weapons. The ground collapses. There are only circles of land to walk and run on. Retrieve the weapons, and don't get killed doing it.