Unemployed young man Chen Mo found a night shift security job with a monthly salary of 30,000 yuan. On his first night on the job, he saw twelve rules on the wall of the security room: Don't trust any owner after two o'clock in the morning; if the lights in Building 13 turn on, please turn off the surveillance immediately; if you hear a child crying, don't open the door. But when the rules began to conflict with each other, he discovered that the person this community really wanted to trap might be himself.
