Good concept, poorly executed.
The plot isn't so bad, but the pace of storytelling is too slow which makes people bored. Certain moments are so obvious and unnecessary for the main plot. I would've fast-forwarded those moments if it was an online streaming. The ending looks like implying a sequel, not sure if this movie will get one
The film never slows down or bores, plunging from one harrowing sequence to the next.
The film may be flawed, but its message is not.