"Down" is the eighth episode of the "Into the Dark" series, directed by Vincenzo Natali and written by Natali and Josh Stolberg. The story follows a young woman named Lisa (played by Sophie Nélisse), who becomes pregnant with a fetus that has been injected with a mysterious serum. As Lisa's pregnancy progresses, she begins to experience strange and terrifying symptoms, including vivid hallucinations and a growing sense of paranoia.

As the story unfolds, Lisa's condition worsens, and she becomes convinced that her unborn child is not of this world. Her boyfriend, Marcus (played by Mark W. Treacy), tries to help her through this ordeal, but it's clear that something is very wrong. As Lisa's grip on reality begins to slip, she descends into a world of madness, where the lines between reality and nightmare are blurred.

One of the standout aspects of "Down" is its exploration of themes that are both timely and timeless. The film tackles issues of motherhood, paranoia, and the blurring of reality, all of which are expertly woven throughout the narrative. The use of symbolism is also noteworthy, with the fetus serving as a metaphor for the unknown and the uncontrollable.