(Y/n) fong is the young little sister while evan fong is oldest brother. (Y/N) is the unknown devil that have sweet, Very Positive, cuteness and no emotion when (Y/n) is on devil form but she feel her heart is already dead... cause it doesn't beating now... but she acted like innocent. (y/n) and his brother make videos together and share with the whole crew! (Y/N) and vanoss mother died cause she was murdered. You avenge her. By doing in mysterious demon way.but the only one know is evan, your brother he only know who your true form (y/n) is also a youtuber with 19m sub... but 3 of the guys finally met (y/n)... find out the whole story!