The Flash Season 5 Episode 21
The Flash
Season 5

Ep 21. The Girl with the Red Lightning

  • TV-NR
  • May 7, 2019
  • 40 min
  • 7.8  (2,082)

Team Flash has been battling Cicada II, a meta-human with the ability to disable other meta-human powers, who is on a mission to destroy all meta-humans. In the previous episode, Barry Allen/The Flash and his team were able to stop Cicada II's evil plan of using a powerful weapon called The Enlightenment machine, to wipe out all meta-humans from existence. However, in the process, they lost one of their own, Ralph Dibny or Elongated Man, who sacrificed himself to destroy the machine and save his friends.

As the team reels from this loss, they receive news that Cicada II is still on the loose and planning on using her own meta-human powers to destroy Central City. To make matters worse, they discover that she has the power of the Red Lightning, a rare and dangerous ability that could cause massive destruction.

Meanwhile, Barry and Iris continue to deal with the aftermath of their daughter Nora's betrayal. Nora worked with Eobard Thawne, a time-traveling villain, to change the timeline in her favor, and the consequences of her actions have cost her relationship with her parents. They try to put their differences aside to focus on the task at hand, but the tension between them is palpable.

As the team prepares for their final battle against Cicada II, they receive an unexpected visitor - Caitlin Snow's estranged mother, Dr. Carla Tannhauser, who abandoned her daughter when she was a child. Caitlin is understandably upset, but Dr. Tannhauser claims that there is a pressing matter that only Caitlin's scientific expertise can solve. She reveals that she has been conducting secret experiments with a substance called "The Velocity X," a highly addictive drug that can give humans temporary meta-human powers, but at a great cost to their health. She fears that the drug is being sold on the black market and wants Caitlin's help to shut it down.

Despite the personal conflict, Caitlin decides to help her mother and accompanies her to an abandoned laboratory where they discover the shocking truth about Velocity X. Not only is it being used as a weapon by Cicada II, but it is also causing a strange mutation in its users, turning them into mindless, zombie-like creatures. Caitlin vows to put a stop to this dangerous substance and save the city once again.

Meanwhile, Joe and the rest of the police department struggle to contain the chaos caused by Cicada II's Red Lightning power. As they come up with a plan to take her down, they are met with unexpected resistance from one of their own.

The team finally faces off against Cicada II in an epic battle, but the fight takes a turn when they discover the true identity of the villain and the reason behind her hatred of meta-humans. The revelation forces them to make a difficult decision that will have lasting consequences for everyone involved.

As the season draws to a close, The Flash and his team must come together to defeat their greatest enemy yet, while dealing with personal conflicts and addressing the fallout from their actions. Will they be able to save Central City from destruction, or are they too late? Tune in to find out in "The Girl with the Red Lightning."

Description
Watch The Flash - The Girl with the Red Lightning (s5 e21) Online - Watch online anytime: Buy, Rent
The Flash, Season 5 Episode 21, is available to watch and stream on The CW. You can also buy, rent The Flash on demand at Netflix, Amazon, Vudu, Google Play, Apple TV online.
  • First Aired
    May 7, 2019
  • Content Rating
    TV-NR
  • Runtime
    40 min
  • Language
    English
  • IMDB Rating
    7.8  (2,082)