The world has now been invaded by demons, humans must find ways to fight, survive to be able to survive. Each person must pass a single level to have a chance to survive in this deadly demonic world, and you are one of them. Your mission is to survive in the house of the butcher who likes to kill for 30 days, you do not receive any other information. Now, you are standing in front of his house, the outside of the house is nothing special but exudes a gloomy, deadly look. You take a deep breath, try to calm yourself down and then try to open the door to go in, as soon as the door is opened, before your eyes and a corpse with missing limbs and other things and a demonic entity is sitting there with a blood-stained apron on, looking up at you with red eyes.