In the next episode of "DC's Legends of Tomorrow," the Legends including Atom (Brandon Routh), Steel (Nick Zano), Heatwave (Dominic Purcell), and White Canary (Caity Lotz) help out Barry Allen a.k.a. Flash (Grant Gustin) and his team to fight villains from Earth-X.

The synopsis and promotional photos for the upcoming installment titled "Crisis on Earth X, Part 4" were just released recently and showed the Atom and the rest of the Legends standing together in unity and facing the formidable enemies. Apparently, their friends Allen and Iris West (Candice Patton) were about to be married when villains from Earth-X crashed their wedding and threatened the couple. The Flash and his team including Caitlyn Snow (Danielle Panabaker) and Cisco Ramon (Carlos Valdez) were able to fend off the enemies who had a bigger agenda in mind.

It seems that Green Arrow (Stephen Amell) may be heading for the frontline against the adversaries because his girlfriend Felicity Smoak (Emily Bett Rickards) appears very worried and tells him to be very careful and watch his back. Smoak grasps his face with her hands and expresses to him that the situation is very dangerous. Nevertheless, things need to get done for the world to be safe. They embrace each other for the last time. It remains to be seen if the Legends and their superhero friends will be able to defeat their opponents from Earth-X.

In the last episode, the Atom, Steel, Heatwave, and the rest of the Legends went up against Gorilla Grodd who took over the jungles in Vietnam. They were able to drive him out of the area but he was abducted later by the villainous Damien Darhk (Neal McDonough).

"DC's Legends of Tomorrow" season 3 episode 8 will hit the airwaves on Tuesday, Nov. 28 at 10 p.m. EST on the CW.