Just a heads up! I changed the groups around so I'm just going to explain it here :)SNSD did exist, but they disband. So now Tiffany, Yoona and Yuri are making a new group.2pm doesn't exist. Beast does exist.     

Tiffany Hwang meets her ideal man, leading to a perfect marriage. Back at home, however, their beautiful life turns into a nightmare when they discover their neighbors could be assassins who have been contracted to kill the couple. This story is based on the movie 'Killers'. No copyright intended!