Selina Kyle, at home with Isis on her birthday, sees a report on the billion-dollar Jewel of the Empress at a Baroness' birthday party. Suiting up as Catwoman, she breaks into the building, brushing aside a discarded stuffed mouse, and steals an unrelated diamond necklace. Nearby, she finds a young girl out of bed. As she tries to get her back to bed (mainly to keep anyone from hearing her), she hears her saying something about bijou, which she remembers enough French to translate as "jewel."
The girl leads her to a safe. Catwoman, excited, manages to catch "Jewel of the Empress and others" from her speech. She opens the safe without problems... and finds Bijou, a cat and her two kittens, trapped inside. Catwoman accepts one of the kittens, resigned to what she has gotten, and wishes the girl a happy birthday.