Since the 2014 debut of The Flash, The CW's superhero dramas have exploited the notion of a shared universe, with heroes, villains and supporting characters crisscrossing cities, shows, dimensions, and even from live-action to animation (and back). The so-called Arrowverse fully embraced the crossover last year with "Invasion!," a four-night event that spanned Supergirl, The Flash, Arrow and DC's Legends of Tomorrow. Next week, however, that concept is taken even further with "Crisis On Earth-X."
While each episode of "Invasion!" focused on the characters of the corresponding show -- in truth, though, Supegirl was only connected by a brief epilogue -- "Crisis On Earth-X" is treated more like a four-hour movie or miniseries; it even gets its own title sequence. What's more, the action shifts among the main players, so there's no obvious "star" in each episode.
But what else do we know about the Arrowverse's big 2017 event?
When Does Crisis On Earth-X Air?
The format of the crossover required The CW to temporarily change up its lineup. "Crisis On Earth-X" kicks off Monday, Nov. 27, at 8 p.m. ET/PT, with the heroes brought together by the wedding of Barry Allen (Grant Gustin) and Iris West (Candice West), and continues at 9 p.m. ET/PT with Arrow, moving to Monday for one night only.
The event concludes Tuesday, Nov. 28, at 8 p.m. ET/PT with back-to-back episodes of The Flash and DC's Legends of Tomorrow.
What's Crisis On Earth-X About?
As we previously mentioned, it's a happy occasion -- the wedding of Barry Allen and Iris West -- that leads the DC heroes and their friends to travel through time and across parallel worlds to gather at one place. However, Kara Danvers (Melissa Benoist) and Alex Danvers (Chyler Leigh) aren't the only ones who arrive from for the event from another universe: Villains from Earth-X, all of whom are familiar or at least familiar-looking, choose the ceremony as the perfect time and place to launch an attack. The heroes of the Arrowverse must then unite to save their world from these invaders.
As executive producers Marc Guggenheim and Andrew Kreisberg explained in September, "Crisis On Earth-X" was inspired in part by the classic DC Comics crossovers between the Justice League of America and the Justice Society of America. There's also a long comic book tradition of supervillians crashing superhero weddings.
What the Heck Is Earth-X?
Before the events of DC’s Crisis on Infinite Earths, Earth-X was a parallel world in which Germany won World War II. It was home to such former Quality Comics heroes as Plastic Man and the Freedom Fighters (Uncle Sam, Phantom Lady, The Ray, Doll Man, et al). It's also the setting for the upcoming Freedom Fighters: The Ray, the animated series debuting next month on the CW Seed digital platform, featuring the first gay superhero to headline his own show.
DC's Earth-X returned in a slightly different form in 2007 as Earth-10, where the Freedom Fighters fought a Nazi version of the Justice League known as JLAxis, led by the Superman doppelganger Overman, whose sister Overgirl was later introduced. That setup appears to have influenced the Arrowverse's depiction of Earth-X, complete with a team of superpowered Nazis.