At the Yamashita Docks in Yokohama, Police Inspector Chiba Toshikazu along with his partner Inagaki rush to stop illegal immigrants entering Japan via the docks. The immigrants open fire when the police try to arrest them, so Chiba uses magic to subdue them. The ship tries to flee. Chiba orders Inagaki to stop the ship and boards. However, they find the rest of the criminals have escaped.
In Chinatown Zhou waits for his guests to arrive via a well and when they emerge, he speaks with the leader Chen and invites in to breakfast.
At First High Shiba Tatsuya is researching alchemic literature. Miyuki arrives and after a quick discussion she advises that Ichihara is looking for him. Tatsuya hears to find Ichihara discovers he was summoned to speak with Tsuzura Sensei about replacing Hirakawa Koharu, who has been sick since the Nine Schools Competition, on the Thesis Competition team by request of Ichihara Suzune. She requested Tatsuya and refused all others because he is working on the same topic, and she believes he is the only option at this point with less than 2 weeks remaining before submitting the draft.
Later at the café Einebrise, Tatsuya tells Erica, Leo, Mikihiko Mizuki, Honoka, Shizuku and Miyuki about his being on the Thesis team. Everyone is stunned when he tells the the topic is ‘The Technical Issues Surrounding the Use of Gravity Magic Controlled Thermonuclear Reactors and Their Possible Solutions.’
On the way home Tatsuya notices Miyuki is upset and he reassures her he’ll be careful and that he hasn’t forgotten his existence is dedicated to her alone. Tatsuya notices a car parked outside their house and they discover their step mother Sayuri is visiting.
The Shiba siblings came home to find their step mother waiting for them. Miyuki deliberately gets over affectionate with Tatsuya to upset her and then heads to her room to get changed.
Tatsuya and Sayuri go to the living room and after discussing their relationship briefly Sayuri reveals she’s here to discuss a project with Shiba Tatsuya reguarding the analysis of a Relic. Tatsuya becomes interested when he hears the Relic can store magic sequences and agrees to help but when he asks for it to be sent to the lab at Division 3 Sayuri gets angry.
After arguing Shiba Sayuri leaves and after playfully scolding Miyuki, Tatsuya quickly follows Sayuri out. Sayuri reflects on what happened and is ambushed by armed assailants on the road. As she’s being threatened Tatsuya arrives on his bike and he subdues them using magic even under cast jamming. As Tatsuya checks on Sayuri he feels bloodlust from a third assailant and is shot in the chest by a sniper.
The Sniper hits Tatsuya in the chest but he quickly takes cover and instructs Sayuri to stay down. The bullet wound has already healed as he tries to locate the Sniper. Magic is used to retrieve the injured assailants and the car flees. As the car can be tracked Tatsuya focuses on the Sniper and using Elemental Sight, he tracks their location and kills him. Confirming Sayuri is ok they discuss the attack and the attacker’s motives.
Tatsuya gets back home with the Relic to find Miyuki has prepared dinner for him. After their meal they discuss Sayuri’s visit and Tatsuya explains the Magatama’s ability to store sequences is a vital piece to completing his goal of realising a Resident Type Gravity Magic Controlled Thermonuclear Fusion Reactor. Miyuki reflects on their relationship and her guilt in her role binding Tatsuya.
After Miyuki is asleep Tatsuya contacts Major Kazama to report the shooting. The Major advises the cameras are taken care of and that they will investigate the attackers.
Meanwhile in Chinatown Lu Ganghu reports the mission to acquire the Relic failed. Chen Xiangshan, the team’s leader, upon hearing about the Shiba siblings orders the team to add First High as a target.