There's a new game going around high schools in South Korea. One to contact the spirits...it's called 'Who's there?'. No one knows who started it and there are increasing rates of reports of 'suicide' by this game, who's responsible is all a mystery. Meet Park Hee Areum. An average 17 year old girl attending an average high school Turns out she's not so average after all with her ability to see ghost and demons, nobody knows this, but her Auntie, who can also see them. Seeing dead people doesn't phase her anymore, after seeing them all her life. Meet Oh Sehun. A 17 year old boy, who used to go to high school before the tragic accident. You see, he's dead, an innocent angel being framed for all these 'suicides'. How you may ask, well everyone who has ever played this game have asked who the they were talking to; with the same answer being Oh Sehun. Turns out it's not him, it's a demon. But thanks to everyone's belief that it is him, he was thrown out f heaven and his once fluffy white wings turn black. What happens when they meet? will Areum help clear his name and help see the light? and will Sehun help find the demon responsible?