A mysterious figure known as gives the "Book of Destiny" to a radical psychiatrist, Dr. John Deegan. Deegan uses it to rewrite reality, causing Barry and Oliver to swap identities.
wakes up as The Flash, living Barry's life with Iris West-Allen. 2. The Struggle for Truth
The duo tries to convince Team Flash of the switch, but the team doesn't believe them and eventually locks them in the S.T.A.R. Labs pipeline. To escape, they must learn to use each other’s unique skill sets—Barry learns to fight, while Oliver learns to phase. 3. Trip to Smallville
A reality-bending "Freaky Friday" scenario where Barry Allen (The Flash) and Oliver Queen (Green Arrow) wake up to find they have swapped lives and powers . 📖 Key Plot Points 1. The Reality Swap
wakes up as the Green Arrow, training with Diggle at A.R.G.U.S..
This episode originally aired on , and serves as the explosive kickoff to the 2018 Arrowverse crossover event. ⚡ Episode Overview Title: Elseworlds, Part 1 Season/Episode: Season 5, Episode 9 (Episode 101 overall)