The final season premiere of Arrow saw Oliver Queen travel to Earth-2 on a mission for the Monitor. However, the episode ended with an absolute shock when Earth-2 was destroyed, with Oliver, Diggle and Laurel the only characters who walked away from the devastation.
Now, The CW has released the promo for the series’ next episode, “Welcome to Hong Kong,” and it shows Team Arrow dealing with the loss of an entire parallel world.
https://m.youtube.com/watch?v=Kfj3xucI8Xk
“An entire world erased from existence,” the Monitor says ominously, while Laurel appears to deny the possibility that her entire home world is gone. And yet, it doesn’t appear like there will be much time to grieve, given that the next mission has already begun.
Arrow’s entire eighth and final season will build up towards the cataclysmic events of the highly anticipated crossover “Crisis on Infinite Earths.”
Airing Tuesdays at 9 p.m. ET/PT on The CW, Arrow's final season stars Stephen Amell as Oliver Queen, David Ramsey as John Diggle, Rick Gonzalez as Wild Dog, Juliana Harkavy as Black Canary, Katie Cassidy as Black Siren, Katherine McNamara as Mia Smoak, Joseph David-Jones as Connor Hawke and Ben Lewis as William Clayton-Queen.