Hey I decided not to do the whole mad scientist thing because I need to know more about Adrien's parents. So in it's place, here's this.!Ladybug and Chat Noir go after a werewolf alums but in the middle of the fight it scratched Chat's ring. Everything seems normal at first but Adrien starts changing.
First he develops higher senses, different appetites, next starts growning hair in certain areas and grows back instantly when he shaves, then he develops new urges and desires when feeling anger or lust, finally he begins to turn into a cat like monster when he's pushed too far. When his emotions mix with his new animal instincts he does things he would never do.
Meanwhile Marinette loses one of her earrings and as she looks for she notices how strange Adrien and Chat are acting causing her too worry. To make matters worse people have been disappearing at night without a trace. Making her wonder if Chat might have something to do with it. Will she be able to help Paris and her partner without her powers? Will Adrien be able control himself when the time comes for him to hurt the woman he loves? And will Marinette find her earring before you know who does?
Warning! This will contain blood shed, murder, character death, and sexual content but nothing inappropriate or nasty and allow deaths will be revived maybe, it all depends.