Zombies have taken over the earth. Kris and Suho are Zombie royalty, the "Kings" so to speak. Luhan (AKA Lulu) is the zombie princess (even though he's a boy) and has courters out the wazoo (although, there is one that has caught his eye. His name is Sehun and Luhan just can't get over his cold, undead face). 

The entire royal family goes by EXO and consists of twelve undead boys who are all gay for each other. 

 

By the way, zombies aren't rotting corpses, unlike what most people think. Becoming a zombie actually makes you more attractive, you just have an odd desire for brains and there's that tiny fact that you're dead.