There was a emergency room in a hospital that considered as an haunted room because each patient who has been admitted in this room died next day. They have no idea whats going on. What is happening. They put security camera in that room to check normal and paranormal activities. And then they come to know that sweeper whose duty to clean that room came there. He simply unplug the switch of oxygen and put the charger of his phone there. Set his phone on charging, play music in high volume and started working.