WARNING: This article may have spoilers for The 100 season 7 episode 15. Read at your own risk.

The 100 season 7 episode 15 is coming next week on The CW, with the title "The Dying of the Light." This is a significant episode as it serves as the penultimate of the series finale. Fans going to see most of the characters doing their best to save everyone from the impending final battle.

In The 100 season 7 episode 15, Clarke (Eliza Taylor) and Octavia (Marie Avgeropoulos) are up for a desperate rescue mission as the Disciples are getting closer to getting what they want. A lot of lives are in jeopardy and some of their friends may not make it out alive until the end.

Clark and Octavia need to do whatever they can to stop the Disciples before it's too late. The penultimate will be an intense one and will set up epic battles leading to the final episode. It would be nice to see most of the characters in a better place after everything they've been through.

But, the death of the characters isn't surprising, as the series finale featured the demise of Diyoza (Shelby Flannery) and most recently Bellamy (Bob Morley). No one is safe now that the final showdown is coming. This battle won't be wrapped up here and will continue in the official series finale.

The words "one last war" was mentioned in the promo of The 100 season 7 episode 15. This suggests that all of them are heading to the final showdown between the Disciples. The clip teases action-packed scenes, including a near-endless amount of gun battles.

However, it looks like two lives are in grave danger moving forward. Emori (Luisa D'Oliveira) and Murphy (Richard Harmon) are in grave and one of them -- or both -- could die before the episode ends. They're in a tight position and their future is in questions.

Meanwhile, the final episode of the series is titled "The Last War," a reference to what was said in the promo of the penultimate. Fans are going to see Clarke and her friends reaching the final battle after everything they've been through.

Now, the biggest question is whether or not humanity is worthy of something greater. Clarke has been doing everything she can to save other people, especially those she loves the most. The major concern is that she could end up sacrificing herself for the sake of everyone.

The 100 season 7 episode 15 airs on Wednesday, Sept. 23, on The CW.