The Flash is forced to confront his greatest challenge yet when his enemies unite against him. Captain Cold is back, and he's bringing together all of The Flash's most formidable foes in a scheme to take down the speedster hero once and for all. With the help of some new allies and old friends, including the genius tech specialist Cisco Ramon, The Flash must stop this Rogue War from destroying Central City and protect his loved ones. Along the way, he discovers shocking secrets from his past and uncovers surprising truths about his powers, leading to a climactic showdown that will determine the fate of the city and The Flash himself.