One day, Rikka returns home from school for her birthday to find it being attacked by a hit squad led by her father's former colleague, Lauren, intent on obtaining his research, including three AI robotic animal drones: Kasumi the eagle, Oboro the dog and Madara the flying squirrel.

She works as a detective-in-training for Harold Berkeley and uses the animal drones to find information about her family's murderers which are linked to the Gradsheim company.

Mia fights him but is defeated, while Lily finds a recording of her father and grandfather, wishing her a happy birthday and giving her a present: a "Black Fox" ninja suit with cybernetic enhancements.

Later, the president of Gradsheim, Brad Ingram, holds a press conference where he denies any involvement in the incident with the military drone, but Rikka recognizes him as the mastermind behind the attack on her family.

The film is produced by studio 3Hz, and directed by Keisuke Shinohara and written by Naoki Hayashi, with Kazuya Nomura serving as chief director.

Crunchyroll streamed the film on their website on October 4, 2019 in all territories, except Asia, France, Germany, Italy, the rest of Europe and Russia.

[5] A live action tokusatsu drama film titled BLACKFOX: Age of the Ninja, written by Hayashi and directed by stunt coordinator Koichi Sakamoto, was released on October 5, 2019.