Ep.1 "Sute Yama Tantei-sha Monogatari～『 Anan Kouta-Kun Yukai Jiken 』ni Chokozai no Nakama tachi ga Idomu" Maiko opens her own private detective office. Maiko then receives the case of a missing 3-year-old boy. Ep.2 "ATARU Kanzen Shinsaku Special - New York kara no Chousenjou!!" Tasuku is Ataru's younger brother. Tasuku becomes a suspect in serial murder cases. I order to save Tasuku, Ataru comes back to Japan from New York. Ataru tries to solve the case with Maiko, but Madoka blocks them.