In a world where heroes are already engaged in their respective battles, the fastest man alive, Barry Allen, has everything he ever wanted. He is married to Iris West, has his life put together, and his dark history of losing his mother is merely a past. But with the coming of a new evil — one who is able to control time itself — Barry's life is broken once more.
Step in the Reverse Flash, a sneering and enigmatic villain from Barry's future, with a personal vendetta against him. As Barry's quest to stop this new villain reaches critical mass, he discovers horrifying tidbits about his mother's murder and the twisted reasoning of his nemesis. With the help of fellow speedster Wally West and seasoned hero Jay Garrick, Barry must compete against time to prevent irreversible changes to history itself. But the more he learns, the more he realizes his greatest fight will not just be against someone who is faster than him, but with the evil in his own heart.
As time unravels and reality gets twisted, Barry is compelled to confront his own darkest fears and the cost of vengeance. With his loved ones hanging in the balance, and the lines of good and evil growing more and more dangerously fuzzy, Barry is subjected to the ultimate test of what he is — not merely as a hero, but as a man.
