You and your high school friends have decided to visit your favourite teacher. The entrance door is opened. Thus, you have decided to go inside. Nobody is at
home. The teacher has disappeared somewhere. Everything looks very strange. You think about leaving the apartment and finding out what has happened to your teacher. However, the entrance door is closed…somebody has locked you in the apartment. You have to find your way out of the apartment and to find out about the disappearance of your teacher.