Plot: Conan, Ran, Sonoko, and Sera are invited to their classmate Sekizawa Yumi's birthday party. Because her older sister Sekizawa Remi the model's birthday is one day earlier, their joint birthday party is attended by numerous celebrities, Remi's manager Kushiyama Mitomu, Remi's classmate and pastry chef Hatsune Tsuguo, and hair and makeup artist Hanasaki Mizutoshi