Former emergency rescue team member Su Ye was attacked by smoke during a charity rescue training. When he woke up, he was trapped in a closed building complex embedded deep underground. The electronic bracelet on her wrist showed a countdown to "10". There were nine strangers trapped with her. Each of their bracelets were engraved with labels such as "impulsive", "selfish" and "suspicious", and Su Ye's label was "obsession".
The mechanical voice of the secret room system announces three cruel rules: the "vital key" must be found within ten days to escape; a death screening is triggered at midnight every day, and those who fail to complete the day's tasks will be wiped out; cannibalism is prohibited, and violators will be executed immediately.
Su Ye, who had experienced countless life and death rescues, thought he had seen through human nature, but in this desperate game, he encountered a game of human hearts that was more terrifying than natural disasters. She relied on her professional rescue experience to break through numerous mechanisms and struggled to find trustworthy companions amidst suspicion and betrayal. But as clues continued to emerge, she discovered that this "Ten Days of Survival" was actually closely connected with the unfinished rescue mission three years ago. It was a fatal trap tailor-made for her from the beginning.