Movie opens on February 27

The Movie Collection website posted a 30-second ad for the Gekijōban Tantei Opera Milky Holmes: Gyakushū no Milky Holmes (Detective Opera Milky Holmes the Movie: Milky Holmes' Counterattack) film Monday. This commercial centers on Sherlock Shellingford:

The film will open in 10 theaters in Japan on February 27.

The film's story will feature a three-way battle between The Gentlemen Thief Empire, the Genius 4, and the Milky Holmes groups. Just as the Milky Holmes group is settling down to relax at a hot spring after their study tour, an alarm goes off, because The Gentlemen Thief Empire intend to steal a treasure. The two groups start to battle for who gets to use the "Toys," when suddenly the Genius 4 rush to the scene.

The film's staff and cast are returning from the previous anime series. Takaaki Kidani is credited for the original concept and as the chief production supervisor at Bushiroad and Chronogear Creative, while Makoto Moriwaki is credited as chief director. Hiroaki Sakurai is directing the film at J.C. Staff. Kazuyuki Fudeyasu is writing the script, and Seiya Numata is adapting Natsuki Tanihara and Yume Usahara's original character designs. Elements Garden is composing the music.

The film will star:

Suzuko Mimori as Sherlock Shellingford

Sora Tokui as Nero Yuzurisaki

Mikoi Sasaki as Hercule Barton

Izumi Kitta as Cordelia Glauca

Satomi Akesaka as Arsène/Henriette Mystère

Daisuke Kishio as Twenty/Kai Nijūri

Takuma Terashima as Stone River/Sōseki Ishinagare

Hiro Shimono as Rat/Jiro Nezu

Yoshino Nanjou as Kokoro Akechi

Ryoko Shintani as Hirano Hasegawa

Yukari Tamura as Saku Tooyama

Miyuki Sawashiro as Tsugiko Zenigata

Japanese professional wrestler Togi Makabe will voice a character in the film named Felder, who can use Toys and is also looking for the "jewel that resurrects the vanquished."

The franchise has inspired four television anime series and three anime specials.