Arkham Asylum doctor John Deegan rewrites reality, which results in Oliver Queen and Barry Allen swapping lives. In the new reality, they are the only ones that know that they are in the wrong lives and have each other's powers, which prompts them going to Gotham City with Kara Danvers / Supergirl to confront Deegan.
Did You Know?
This is the first part of a three-part crossover event, continued in Arrow episode 7x9 "Elseworlds, Part 2" or "Elseworlds: Hour Two," and concluded in Supergirl episode 4x9 "Elseworlds, Part 3" or "Elseworlds: Hour Three." This is the first crossover not to include the Legends of Tomorrow since the two part Arrow/Flash crossover that served as a backdoor pilot and introduction of some of the characters "Legends of Yesterday/Legends of Today" in season two of this show and is incidentally a backdoor pilot for Batwoman. It is also the first major fall crossover not to take place in the eighth episode of at least most of the participating shows, instead being the ninth episode of the season for all them. See more
When Superman is fighting AMAZO, a crowd appears in the background between shots. The camera moves to a close up of Superman, where he exclaims: "that's not good" it cuts back to display both characters, and the crowd of dozens of people suddenly appears. Earlier in the same scene people are walking in the background casually as if nothing is happening. See more
Why did you guys think I wouldn't recognize you?
[demonstrating Barry's powers, he vibrates his hand
Oh. Well, that's new.
We could use your help.
References Freaky Friday
Written and performed by Remy Zero See more