A battle appears to be brewing for Season 3 of the CW’s post-apocalyptic sci-fi drama “The 100.”

The series’ new trailer, which was released Sunday at the show’s Television Critics Association press day, alludes to a forthcoming war. It also suggests that Clarke (Eliza Taylor) is being hunted after she fled the community of Camp Jaha at the end of the second season — and that a new romance might be developing between her and an unidentifiable character.

Of the new season, “The 100” exec producer Jason Rothenberg said the show would be returning to its roots.

“This season we get to a pure version of where the show started,” said Rothenberg at TCA’s “The 100” panel. “There is internal conflict at Camp Jaha — what was formerly known as Camp Jaha — and there’s a new group that comes in and really mixes things up and creates a lot of conflict internally.”

According to Taylor, the new season focuses less on fighting and more on politics.

“My favorite part of Season 3 is the fact that we do get to explore the world of the Grounders — their politics, their culture, their spiritual history and how it’s changed and how they adapted things from what the world used to be,” added Alycia Debnam-Carey, who appears as Grounder leader Lexa.

Season 3 of “The 100” premieres Jan. 21 on the CW.