The war rages on and after last issues surprise attack the Flash family starts gathering together and trying to get a handle of all that’s going on and recover. However we also get to learn more about the Fraction, including the fact this isn’t actually the first time we’ve referenced them.
Because remember that Mad Max world from the Dark Crisis tie-in that Jessie and Max went to? Apparently that was a world conquered by the Fraction, so not only are these aliens they come from the multiverse and we’ve seen what they are capable of. And what they are capable of is a problem for the Flash Family, because sure they can run and fight as shown when Jessie flips a tank, Wally destroys a drone, and Max takes down a soldier on a speeder bike but it’s the fact they have drones, tanks, and something even worse that I will get into later that makes them a threat when the Flashes can’t seem to out speed the Fraction.
Also apparently the Fraction want to capture the Flash family as a wedding present to their queen, but apparently we will learn about that in the one-minute war special.
Another problem is civilians and casualties. Anyone not in the speed force is frozen solid and can quickly become a casualty so the Flashes are trying to move bodies to safe locations. And the other problem as mentioned is Causalities, which includes Iris West which has really broken Barry Allen. So a lot of our heroes getting their bearings while also be crushed under the weight of a war that is coming.
By the way remember that something worse? As mentioned the Fraction have learned of the Flash family, though not the full extent if they just think there are 5, and want them captured alive as tribute to the queen. And as everyone knows comic book alien races always have those special supersoldiers, so to hunt down the Flash family they unleash Miss Murder, who looks like a cross between Rachel Summers from Days of Future Past and Batman who laughs, and evil alien hounds. Basically aside from stopping the Fraction from wiping out life as we know it, the Flashes need to protect their personal safety.