The CW has dropped a new promo for tomorrow night's "Arrow" episode, "Legends of Yesterday," which ties-up a crossover event with "The Flash" and sets the groundwork for DC's next TV property to hit the small-screen, "Legends of Tomorrow."

Check out the clip below, wherein Vandal Savage shares some choice words with Flash, Green Arrow and the gang:

Producers Marc Guggenheim and Greg Berlanti devised the story for the episode, while Brian Ford Sullivan and Guggenheim penned the teleplay. The episode is directed by "Percy Jackson: Sea of Monsters" helmer Thor Freudenthal.

Here's the official description for "Legends of Yesterday," the eighth episode of "Arrow's" fourth season:

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 Renee) 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.

"Arrow" airs Wednesdays at 8 p.m. ET on The CW.