When a bolt of freak lightning imbues obsessive but emotionally scarred CSI Barry Allen with superhuman speed, he becomes the Flash—a silent guardian protecting Central City from a grief-stricken killer known as Cold. But his mentor, the brilliant Dr. Eobard Thawne, is secretly the Reverse-Flash: a time-traveling speedster who murdered Barry's mother and is now stealing his speed to rip a hole in reality. With the help of his childhood love Iris West and a loyal team of scientists, Barry must race faster than light, survive a black hole, and confront Thawne across the fabric of spacetime itself to save his city, prove his father's innocence, and finally learn his mother's lesson: that feeling—and love—is the only force faster than time.