The CW Television Network has released the official synopsis for the upcoming fourth and final part of this year’s Flarrowverse‘s crossover event which has been titled “Crisis on Earth X” and the second part of it will take place during the eighth episode of DC Legends of Tomorrow‘s current season and you can check it out below.
“Crisis on Earth X, Part 4” — (9:00-10:00 p.m. ET) (Content Rating TBD) (HDTV)
THE EPIC FOUR-WAY CROSSOVER WITH “ARROW,” “SUPERGIRL,” “THE FLASH” AND “DC’S LEGENDS OF TOMORROW” CONCLUDES — Barry (guest star Grant Gustin) and Iris’s (guest star Candice Patton) wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold (guest star Wentworth Miller), The Ray (guest star Russell Tovey), Felicity Smoak (guest star Emily Bett Rickards), Iris West and Alex Danvers (guest star Chyler Leigh) to take on their most formidable villains yet. Earth’s mightiest heroes – Green Arrow (guest star Stephen Amell), Supergirl (guest star Melissa Benoist), The Flash (guest star Grant Gustin) and White Canary (Caity Lotz) – lead their teams into battle to save the world. Gregory Smith directed the episode with story by Marc Guggenheim & Andrew Kreisberg and teleplay by Phil Klemmer & Keto Shimizu (#308). Original airdate 11/28/2017.
DC Legends of Tomorrow airs on Tuesdays, on The CW.