Midnight on the Twelfth Floor

The protagonist who claims to have come out of the orphanage is involved in the "endless dream" on the 12th floor. He needs to go through the 12th floor and reach the 1st floor before he can escape from the 12th floor and return to reality. During this period, I met many people and things. They all have the same but different dreams. They all want to return to the real world, and they all want to do what they want to do in the real world. But can they really escape from the hotel on the 12th floor?