Fans of the Milky Holmes detectives, Kazumi and Alice, decide to form their own detective unit, calling themselves Feathers. (Source: ANN)

The four members of Milky Holmes are going on a study tour. While soaking in the hot springs among snow monkeys, alarms interrupt the relaxing environment! It was the work of the Thief Empire. A fierce battle between Milky Holmes and the Thief Empire begins, with both sides using their Toys (special powers). Furthermore, with the arrival of the Genius 4, a three-way fight occurs! In the midst of battle, a violent lightning strikes from the sky. Struck by the lightning, the four Milky Holmes girls lose their abilities.

There have been many cases of stolen songs happening among the idols in Yokohama District recently. Even super idol Marine Amagi's hit song Kiseki no Uta was taken away. At the request of Marine, the Milky Holmes team starts investigating the case. (Source: Crunchyroll)

A special program of Tantei Opera Milky Holmes produced by the staff of the TV series. After some pushing by Irene and her father and a lack of support otherwise, Kokoro stubbornly quits her job as a police detective to become an idol. She soon finds the idol life draining and starts to miss her old detective life. When Henriette notices Sherlock's loneliness without her, she stages a statue theft in order to convince Kokoro to return to the force. (Source: AniDB)