1-Frank is a hacker of the alliance and is locked into a secret room by ISN. ISN uses constant hypnosis to find out the whereabouts of the USB flash drive from his dream.
2- The secret room is real, and everything that happens, from the power outage, to the coffee shop romance, to the two escapes, is a dream. During the last escape, the female clerk flashed into the secret room, and the last camera hinted that she was still in a dream.
3- The last time he fled, did Frank deliberately leak the whereabouts of the USB flash drive or did he really think he had successfully escaped? I think it was a deliberate leak. He did not want to continue to live in the cycle of secret rooms and dreams. In the second half, he mentioned that he regretted not terminating his father's ventilator, reflecting that he did not want to live like this.
There are a lot of unnutritious dialogue in the movie, which should be simplified.
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