Reed's air cannons are locked and loaded, but multiple tornadoes prove a hard target for an itchy trigger finger. Tim's team chases in the tornado twilight zone, while Sean weathers a storm of controversy.
Storm and chasers collide in Minnesota for a final showdown. As a ferocious EF-4 twister targets the town of Wadena, one team finds themselves in the wrong place at the right time, and Sean's trial by fire becomes a race to save others.