Arisa suspects that Nanoha is hiding something.

Fate's mother, the real villain, is revealed just as the Time-Space Administration Bureau arrives.

After all the TSA Land Headquarters, including Sixth Mobile Division, is completely defeated by Jail Scaglietti. Many of officers are injured. Vivio and Ginga were captured. Sixth Mobile Division is now unable to be the HQ anymore. Hayate decides to move all the units on to Arthra. It is also revealed that Nakajima family had adopted Ginga and Subaru a long time ago since they still were an experimental Cyborg Type-0 (Initial model of Numbers). Although they still needed the maintenance treatment like the other cyborgs until now, they were still treated kindly as normal girls.

The episode explores the lives of the characters as they go about a normal day, training, etc. The episode also gives some insite into the Numbers.

The main point is that Nanoha and Fate have adopted Vivio, the girl with the Relic as their child.

Explained how Agito joined Lutecia and the reason why Hayate created Mobile Section Six.

Nanoha, Fate, Shamal, Teana, and Subaru come to aid Caro and Eriol. Eriol, Caro, Teana, and Subaru go down the sewer to investigate. They meet up with Subaru's sister, Ginga, but things take a turn or the worse.

Nanoha ignores orders and tries to help Fate.

Nanoha joins with the Time-Space Administration Bureau. Yūno reveals his human form to Nanoha.

Although the danger is averted, the threat to Hayate's life remains. In view of this, Reinforce makes a fateful choice.

Hayate is engulfed by the Book's power. Chrono confronts Graham on the past and gets a new weapon.

While Chrono researches Graham, the masked man- well, two of him- complete the Book of Darkness at great cost and frame Nanoha and Fate for the crime.

Teana wakes up in the infirmary many hours after being on the receiving end of Nanoha's attack. She and the other young recruits learn about Nanoha's past and how she almost died several years ago on a mission due to having overextended herself, causing Teana to understand Nanoha's training methods.

Stars and Lightning undergo further training, intended to enchance their strengths and skills. Meanwhile, Hayate requests the aid of Major Genya Nakajima's 108th Ground Forces Battalion to assist Mobile Division 6 in investigating smuggling routes. Fate and Shari discover that a Doctor Jail Scaglietti is implanting Jewel Seeds into the Type-3 gadgets.

Hayate's condition worsens, and the TSAB corner the Wolkenritter.

Fate faces her dreams up against reality, while Nanoha battles the Book of Darkness.

Nanoha and Fate fight the much stronger Wolkenritter.

Raising Heart and Bardiche demand a new and dangerous modification to their design.

A masked man appears to help the Wolkenritter, whose artificial nature is revealed.

Fate and Nanoha again confront Signum and Vita, trying to get them to open up.

Nanoha and Fate meet Hayate, and the TSAB realize that the Book of Darkness is going to kill her.

Wolkenritter, Nanoha, Fate, Hayate and TSAB alike team up against the final enemy.

Subaru, Teana, Caro, and Erio are still enduring hard training with Nanoha, but soon their training will be complete. They are given new upgrades to their devices and the power-limiting feature is explained to them. Afterwards, the Sixth Mobile Division must act on their first mission.

This episode marks the first mission of the new teams, as they battle several droids to recover a Lost Logia. Subaru and the others get to test out their new and improved devices. Part of Caro's past is revealed, as well as her true ability. Someone is monitoring them from a lab, gathering data mostly on Fate and Erio, who have a connection with "Project F".

Subaru, Teana, Caro, and Erio are on their vacation. Suddenly, Erio sensed a magical presence, and follows it. To Erio and Caro's surprise, they see a girl coming out of the sewers. What was attached to that girl's foot was a relic case!

Everyone is under attack, and Hayate comes to help. Lutecia and her companions come to get the relic. When they retrieve the relic case, they open it only to find something unexpected inside.

Sixth Mobile Division is on a mission to protect the TSA Public Press Conference. The commanders, including Nanoha, Fate, Hayate, and Signum are inside without their devices, which they entrust to the forwards. Meanwhile, Jail Scaglietti and his Numbers, also Lutecia and Zest, are working on their plan.

Nanoha is on her way to the throne room where Vivio and Quattro are supposed to be. Vita is struggling on her way to the machine room, fighting with gadgets. Fate starts her battles in Scaglietti's HQ with Tre, Sette and Scaglietti himself. Meanwhile, Teana is trapped on her own against the three of the Numbers. Subaru is against Ginga, who was re-programmed, and Caro and Erio are fighting against Garyū and Lutecia.