When he acquires the power of super-speed, police forensic scientist Barry Allen has a new way to protect Central City from its super-powered criminals -- and to search for the person who killed his mother.
After saving Central City from a massive black hole, Barry discovers that new threats are pouring in from a parallel world -- sent by a super-villain who consumes the speed force. But a fellow speedster also arrives to help the Flash try and stop Zoom.
Barry's decision to alter the past has long-term consequences, opening the door to a new enemy who calls himself the "God of Speed" -- while those close to him struggle with their own emerging powers.
Barry returns from the Speed Force a changed man, and must rediscover his old life and his family in order to take on a super-intelligent new foe: Clifford DeVoe, whose plans are always two steps ahead of Team Flash.
As Barry and Iris cope with the arrival of their own daughter from the future, a killer attempts to eradicate all metahumans from Central City.
A brilliant physician goes down a dark path in his desire to defy the laws of nature, turning him against Team Flash and threatening Central City with a monstrous new villain: Bloodwork.
Barry and Team Flash are caught up in a conflict between the Speed Force and other forces of nature. As old friends say goodbye, the city is besieged by an army of speedsters from the future.
The Flash must call upon his allies when a powerful alien threat arrives on Earth under mysterious circumstances, pushing the team to its limits in a desperate battle to save the world.
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CONCLUDED. The Flash aired for nine seasons on The CW in the United States.