Season One follows Barry Allen living in an alternate timeline after Zoom destroyed what remained of his life. Now, with the help of Wells, Caitlin and Cisco, Barry must fight to protect his new timeline against the dastardly Trickster and the Reverse Flash. To do this he can't be just Barry Allen, he has to be THE FLASH.
Barry Allen was struck by lightning and given super speed. A year later, The Reverse Flash destroyed his life. Now, The Flash is alone with just Harrison Wells by his side and an old S.T.A.R. Labs base in his university but when a new speedster turns up calling himself Zoom and demanding Barry give up his speed, Barry must try and find a way to defeat Zoom before he destroys Central City. In his attempt he reaches out to his old friend, Caitlin Snow, in hopes that they can be victorious once more but what will the price be for their success?