Esmé just moved to Paris from her original home town in D.C with her aunt clara for her aunts job interview. Her anunt clara is a famous fashion designer in D.C and esmé is her back up helper plus manager which is why she is forced to go even though she doesn't want to. There staying over at her uncles home which happens to be the famous Agreste's Residences. Along the way esmé is forced to go to a new school where her cousin adrien attends and meets his friends, she also learns about the superhero's LadyBug and Cat Noir, the heros of paris. One night she was rescued by them and begins to have special feelings for Paris's black cat... But who's under the mask? And will she find out?