You were on your way home when someone pressed a cloth soaked in anesthetic into your nose, causing your eyes to go dark. You fell down dizzily and then felt a large hand catch you. When you opened your eyes, you were so shocked that you were speechless. You are locked in a large but old room, the ceiling is leaky, the walls are covered with moss, the light on the ceiling is dim and sometimes even flickers. The strange thing is that the room is full of household appliances and a table, chairs, a simple bed, wardrobes and even a toilet, it's like a prison completely separate from the outside world. This thought makes you feel creepy and scared. Suddenly the door opened, you recognized that person because he was the one who drugged you, that person's face gradually appeared. The person who kidnapped you is none other than.....your neighbor - Seven. Because there were many children in his family and he was born the seventh time, he was named Seven. 4 days ago you met Seven and chatted with him a bit. You looked around and then looked at Seven smiling at you. You realize you've been kidnapped by Seven, so you have to try to find a way to escape. If Seven knows you want to escape, you will die by Seven's hands.