Arrow Crossover Episode Legends Of Yesterday Begins Production

10/02/2015 09:29 pm EDT

This week, Arrow and The Flash are filming their crossover episodes -- which will lead into the forthcoming spinoff series DC's Legends of Tomorrow.

The Arrow half of the crossover is titled "Legends of Yesterday," presumably focusing on the backstory of the ancient, immortal Vandal Savage, who will be the central antagonist of both the crossover and the Legends of Tomorrow series.

You can check Guggenheim's tweet out below.

When heroes alone are not enough… the world needs legends. Having seen the future, one he will desperately try to prevent from happening, time-traveling rogue Rip Hunter is tasked with assembling a disparate group of both heroes and villains to confront an unstoppable threat — one in which not only is the planet at stake, but all of time itself. Can this ragtag team defeat an immortal threat unlike anything they have ever known? DC'S LEGENDS OF TOMORROW stars Victor Garber ("The Flash," "Alias"); Brandon Routh ("Arrow," "Superman Returns"); Arthur Darvill ("Doctor Who"); Caity Lotz ("Arrow"); Ciarra Renee ("Pippin"); Franz Drameh ("Edge of Tomorrow"); with Dominic Purcell ("The Flash," "Prison Break"); and Wentworth Miller ("The Flash," "Prison Break"). Based on the characters from DC Comics, DC'S LEGENDS OF TOMORROW is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti ("Arrow," "The Flash," upcoming "Pan"), Marc Guggenheim ("Arrow," "Eli Stone," "Percy Jackson: Sea of Monsters"), Andrew Kreisberg ("Arrow," "The Flash," "Eli Stone," "Warehouse 13") and Sarah Schechter ("Arrow," "The Flash," upcoming "Pan").

DC's Legends of Tomorrow will debut on The CW in early 2016.

Disclosure: ComicBook is owned by CBS Interactive, a division of Paramount. Sign up for Paramount+ by clicking here.