An extended trailer for next week's Supergirl finale shows General Zod emerging from space. The events of Supergirl's second season will come to a head next week when the Girl of Steel dukes it out with the Man of Steel, which the network is dubbing as the "fight of the century." It's just the latest in the recent trend of hero vs. hero battles we've seen in movies and on television.

While seeing Supergirl take on her more famous cousin will certainly be one of the many highlights of the night, there are several other things to look forward to, such as Kara Danvers' taking on Mon-El's mother, Rhea, in a trial by combat. What better way is there to solve yet another alien invasion than by challenging your opponent to a trial by combat, for the rights to Earth?

Although Kara currently has her hands full with Rhea and the Daxamites invading Earth, there is another supervillain on the horizon that she should be concerned with: General Zod. The iconic Superman villain is expected to make his debut in Supergirl's season two finale, and The CW is teasing his arrival in an extended trailer for next week's finale. Watch the trailer above.

"I'm on the brink of having everything I ever wanted -- family, friends, a job that I love. A life as a hero I never could have imagined. And Mon-El," Supergirl says, accompanied by glimpses of moments from earlier on in the season. "If I beat Rhea, I get to keep all that." Everything she and her friends at the DEO have strived to achieve -- happiness -- is being threatened by Rhea. That's why National City's superhero invokes a trial by combat, saying, "May the fate of my people rest on the fate of my life."

As if that wasn't enough, Supergirl will eventually have to go toe-to-toe with Superman at some point in the episode, and that won't be a fight easily won. After everything is all said and done, next season's presumed big bad -- General Zod -- will enter the fold. Announced earlier this year, Zod will be played by Mark Gibbon. His entrance is being teased in the extended trailer, with what looks to be some sort of transmission. In it, while wearing a Nazi-inspired costume, he delivers a chilling variation of his iconic phrase, "The people of this planet will kneel before me."

Supergirl has been renewed for a third season, which will air later this year. Hopefully, some of the questions audiences have for what the next season will entail will be determined in next week's season two finale, which is being teased as the series' biggest episode yet, titled "Nevertheless, She Persisted" (a provocative political title). Whatever happens, the stakes have certainly never been higher for Supergirl.

NEXT: Why is Superman 'Evil' in Supergirl Season 2 Finale?

Supergirl wraps its second season on Monday, May 22nd at 8 pm, with the episode "Nevertheless, She Persisted".

Source: The CW