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The Flash from the future has returned twenty years ago and managed to close the gap in the Speed Force, the very natural energy that powers his superpower. Although time and space are safe again, his actions have had unintended consequences. While the Flash from the future remains in the present, his bewildered doppelganger is drawn into the rift and captured by the Speed Force itself!

Taking over the life he has already lived, Barry from the future is preparing to correct his mistakes. However, they managed to change him and make this Flash more cruel... and deadly! The Flash from the future relies on a twisted understanding of justice that will make those who dare to take a life pay dearly for it.