Hwang Hyunjin is a serial killer, psychotic one no one understands why he kills people, he's really good looking in real life and handsome also plus, rich guy, he's known as Maniae he's really demonic

Lee Felix is a psychiatrist who works in a rehabilitation programs with his best friend Han, Felix is really beautiful and angelic looking boy

How they met??, how fates tangled of these two, Felix is almost a example of kindness, love, care and beauty, while Hyunjin is demonic