Rewrite of Crisis on Earth X. Kara Danvers and Barry Allen have battled and overcome the worst, but what happens when there newest challenge they must face is themselves. Watch/ read as Kara and Barry fight to protect their Earths from there most powerful threat yet. Why are the Earth X'ers here, what are their true intentions, and can Kara admit her feeling for a certain Scarlet Speeder before it's to late? Find out what happens in Volume 1 of Superflash - Crisis on Earth X.