In Central and Star city, the Flash and Green Arrow have the brilliant idea to switch costumes for a day just to see what life is like in the other's shoes. Suddenly, the rest of their teams, other heroes, and even some villains join in with the fun! But as the heroes discover what life is like for each other, they can't ignore a looming threat that will impact all of them...
Crossover - Flash & Arrow - Rated: T - English - Humor/Sci-Fi - Chapters: 14 - Words: 16,568 - Reviews: 44 - Favs: 38 - Follows: 43 - Updated: 6/22/2016 - Published: 10/3/2015 - Barry A./The Flash, Cisco R., Oliver Q./Arrow/Green Arrow, Felicity S./Overwatch