We meet Chicago elementary school PE teacher Tony Harris, who looks forward to a quiet Friday night at home. The Moore family in Mayfield, Iowa, enjoys grilled burgers and a board game. In St. Louis, FBI agent Joe Unes and his partner are called out to a hostage situation at a supermarket to investigate a possible connection to a terrorist group. Nearby, four friends gather for their weekly D&D-type role-playing game. Then an bone-rattling explosion puts the game on hold.