Battle of the Eras," the 40th season of MTV's long-running "The Challenge," is airing its 18th episode on Wednesday, Jan. 8 at 8 p.m. There are several ways to watch with a free live stream.

In part two of the season finale, “the finalists battle for their chance at a share of one million dollars. An epic twist could see someone’s dream taken away from them.” The new season saw 40 returning contestants for the show’s largest cast yet.