Blue Team suffers a slipspace drive malfunction, and ends up in an alternate universe. However, they soon realize their enemies have followed and have begun to attack the Earth. They must work with the heroes and vigilantes to contain the crisis and the lasting effects it has on the world. Rated T for now, but if necessary, will change.
Crossover - Flash & Halo - Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 93,051 - Reviews: 52 - Favs: 40 - Follows: 43 - Updated: 10/16/2020 - Published: 7/8/2020 - Barry A./The Flash, Oliver Q./The Arrow, Master Chief/John-117, Fred-104