The CW has released the official synopsis for the forthcoming The Flash crossover episode of Arrow.
The episode, Part Two of the two-part crossover event and titled "Legends of Yesterday," will air on Wednesday, December 2 and will lay the groundwork for DC's Legends of Tomorrow.
You can check it out below.
“Legends of Yesterday” — (8:00-9:01:59 p.m. ET) (TV-PG, V) (HDTV)
PART TWO OF THE EPIC CROSSOVER WITH “THE FLASH” — Oliver (Stephen Amell) and Barry Allen (guest star Grant Gustin) take Kendra Saunders (guest star Ciara Renée) and Carter Hall (guest star Falk Henstchel) to a remote location to keep them hidden from Vandal Savage (guest star Casper Crump) while they figure out how to defeat him. Malcolm (John Barrowman) arranges a meeting between Vandal, Green Arrow and The Flash that doesn’t go as planned. Meanwhile, Felicity (Emily Bett Rickards), Thea (Willa Holland), Diggle (David Ramsey) and Laurel (Katie Cassidy) work with Team Flash to come up with a weapon powerful enough to destroy Vandal Savage. Thor Freudenthal directed the episode with story by Greg Berlanti & Marc Guggenheim and teleplay by Brian Ford Sullivan & Marc Guggenheim (#408). Original airdate 12/2/2015.