The CW has unveiled the trailer for The Flash, the Arrow spinoff that centers around the fleet-footed superhero originating from the DC Comics universe. Clocking in at whopping 5 minutes, the video follows Barry Allen (Grant Gustin), who gains his super powers from a lightning storm caused by a particle accelerator mishap. That same event confers "meta-human" abilities to what will eventually become the Flash's nemeses, and the trailer depicts what happens when they eventually lock horns. Look for an appearance by the Green Arrow, who offers a bit of advice to the newly minted masked crusader. Check out the video below, and look for The Flash to debut this fall.