In a mysterious high-security prison, a group of female inmates faces their dark fate while awaiting the dreaded execution. Among them is a young woman named Mary, who has been unjustly condemned for a crime she did not commit. With her innocence dragged down by an unrelenting world, Mary clings to hope as she forges friendships with her fellow inmates, who, despite their situation, find ways to cope with their confinement through solidarity and dark humor.
However, tension escalates in the prison's bleak environment when a series of strange murders begin to occur. Something sinister lurks in the shadows, and the inmates soon realize that one of the guards may be involved. Caught between fear and distrust, Mary decides to take matters into her own hands to unravel the truth behind these deaths, risking not only her life but also that of her friends.
With her keen instinct and unyielding determination, Mary attempts to uncover the killer before it's too late. As the story unfolds, a complex web of betrayals, secrets, and redemptions is revealed, prompting them to question the justice of the outside world and the true nature of evil. Set against a somber backdrop, the film combines elements of suspense and drama, exploring the struggle for survival in a scenario where death is the only certainty.