Until recently, 25-year-old Barry Allen (Grant Gustin) lived a normal life as a perpetually tardy C.S.I. in the Central City Police department.
Barry is secretly in love with his best friend, Iris West (Candice Patton), daughter of Barry's surrogate father, Detective Joe West (Jesse L. Martin).
Joe adopted Barry 14 years ago after Barry's mother was murdered and Barry's father, Henry Allen, received a life sentence for the crime - though Barry maintains that a mysterious "Man in Yellow" was responsible.
Nine months ago, the S.T.A.R. Labs Particle Accelerator exploded, creating a dark matter lightning storm that struck Barry - bestowing him with super-speed and making him the fastest man alive.
But Barry wasn't the only person who was given extraordinary abilities that night. The dark matter also created meta-humans, many of whom have wreaked havoc on the city.
With the help of his new scientist friends at S.T.A.R Labs, Caitlin Snow (Danielle Panabaker), Cisco Ramon (Carlos Valdes), and Dr. Harrison Wells (Tom Cavanaugh), Barry begins a journey as The Flash to protect the people of Central City from these powerful new threats.
However, Barry's mission gets sidetracked when he comes face to face with the Man in Yellow. Barry isn't fast enough to catch him but in a shocking revelation the team figures out their beloved mentor, Harrison Wells, is in fact the Man in Yellow and the man responsible for killing Barry's mother.
Harrison Wells reveals his true identity as Eobard Thawne, a man from the future who traveled back in time to kill Barry.
When Barry is finally forced to confront Wells, will he be fast enough to catch him? Or will Wells be successful in killing Barry and returning home to the future?
Based on the characters from DC Comics, The Flash is from by Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti (Arrow, Pan), Andrew Kreisberg (Arrow, Eli Stone), David Nutter (Arrow, Game of Thrones) and Sarah Schechter (Arrow, Pan).