The Masque of Red Death sander sides AU

The Red Death is spreading like wildfire however Prince Roman and Prince remus are not having any of that so they gather up there and party in one of their Abby's however King Thomas is starting to have second thoughts about the Red Death so he calls upon the spirits of the Red Death itself Virgil and deceit they agree to go away at a price all they want is the hand in marriage of Princess Logan( of course I know Logan is a dude but go with it) however he refuses saying that Logan is engaged to be married to princess Patton a total b**** and they make a Grimm promise to show up on one of their mask balls killing everyone except for princess Logan then a masquerade shows up