Princess Marinette of the Kingdom of Creaturae was very happy. Her reasons?-The notorious thief Chat Noir was locked up, her 21st birthday was soon, and she was going to become Queen. That is, until it was decided that she had to marry the mysterious Prince Adrien of the Kingdom of Mortem in order to become Queen. To make matters worse, Chat Noir escaped from jail and is visiting her almost every night. Having to run a kingdom is bad enough, but falling in love with a thief and a prince is the hardest part of all.
(AU) Once Upon a Time, as all fairy tales begin, lived a Prince who was cursed-Awaiting the day His Lady would arrive and make a Red String Vow to break his bonds. But the mind-numbing Hawkmoth needs two fated souls for his plan, and will stop at nothing to revive his lost Queen. With destiny on their side, will our heroes defeat the evil and break the curse of the Black Cat Prince?