When time travel allows a past wrong to be righted for The Flash and his family, the ripples of the event prove disastrous as a fractured, alternate reality now exists where a Justice League never formed, and even Superman is nowhere to be found. Teaming with a grittier, more violent Dark Knight and Cyborg, Flash races to restore the continuity of his original timeline while this new world is ravaged by a fierce war between Wonder Woman's Amazons and Aquaman’s Atlanteans.

In a broken city rife with injustice, ex-cop Billy Taggart seeks redemption and revenge after being double-crossed and then framed by its most powerful figure, the mayor. Billy's relentless pursuit of justice, matched only by his streetwise toughness, makes him an unstoppable force - and the mayor's worst nightmare.

Follows the personal and professional lives of a group of doctors at Seattle’s Grey Sloan Memorial Hospital.