Six months have passed since the events in the previous movie. Fate has returned to Uminari City with Lindy as her legal guardian and is living the life of a normal elementary schoolgirl along with Nanoha and her friends. The reunion between the two new-found friends is cut short, however, when they are assaulted by four ancient magic users who identify themselves as the Wolkenritter. As the motives behind the actions of the Wolkenritter become clear, Nanoha and Fate find themselves in a race against time to stop the reactivation of a highly dangerous artifact known as The Book of Darkness. (Source: ANN)

The OVA featured the previously unanimated "Mad Wax" arc from the manga. Bundled with a limited edition of the manga's 20th volume.

Pandy and Retro awaken naked on Earth with no recollection of their past. They embark on a devastating crime spree in search of food, clothing and transportation, but are captured by authorities and sent to the infamous lunar penitentiary named Dead Leaves. While incarcerated, they quickly discover that Dead Leaves is also a top-secret cloning facility, occupied by villainous guards and deformed genetic experiments. Ultra-manic chaos and hyper-violent bedlam ensue as they organize a prison break with the aid of their fellow mutant inmates.

According to the official Hobby Japan website, an unaired episode of Bikini Warriors will be bundled with the Blu-ray volume to be released on December 9th, 2015. (Source: Hobby Japan)