On Arrow and The Flash, White Canary (Caity Lotz), The Atom (Brandon Routh), Hawkman (Falk Hentschel), Hawkgirl (Ciara Renée) and Dr. Martin Stein (Victor Garber) and Jax (Franz Drameh) — who together make up Firestorm — are all outcast heroes with complicated pasts. And then there's Captain Cold (Wentworth Miller) and Heat Wave (Dominic Purcell), who are both known as villains in that universe.

However, when the time-traveling Rip Hunter (Arthur Darvill) comes calling on The CW's Legends of Tomorrow, he plans on taking this team of misfits and turning them into something even more than heroes: he wants to make them legends.

In a new trailer, these outcasts must overcome their demons and get over their issues to save the world.

Not only do the heroes have to face Vandal Savage, who is part of the plot to ruin the world's future, they also must battle Chronos, who was a longtime time traveling archenemy of The Atom in the comics. In DC Comics, Chronos also battled Booster Gold, Rip Hunter's father.

In the new series, White Canary, aka Sara Lance, will also have a new love interest. Although previously romantically linked to both Oliver Queen (Stephen Amell) and Nyssa al Ghul (Katrina Law), in Legends of Tomorrow, Sara will fall for a 1950s nurse.

"When Sara first meets Lindsay Carlisle, she finds herself in the position of caring about someone for the first time in forever, an idea she's not entirely sure she's ready for," said Legends of Tomorrow executive producer Phil Klemmer to Entertainment Weekly. "It's easy for our cold-hearted assassin to kill a hundred people, but does she have the ability to care about one?"

Legends of Tomorrow is a limited series, meaning that there are only 15 episodes. However, there's a reason for this.

"The reason they are doing a smaller amount is because they want to take the same amount of money that they would for 23 episodes and put it into 15 so that they can really make it big," said Lotz at this year's Superman Celebration. "The new show is going to have a lot of special effects, kind of like those on The Flash, and also a lot of the fighting and stunt stuff that you see on Arrow."

Legends of Tomorrow premieres Jan. 21 on The CW.