The next hero seems to be Billy the Kid. Takeru immediately gets Sennin's clue and at the same time, a new client comes to the Laboratory saying that something is wrong with their best friend. At the same time, Narita and Shibuya bring information of a sighting of the Mysterious Man. Akari and Onari follow the clue to the Mysterious Man and see him talking to Specter. The man, whose name is Saionji, talks about "what happened 10 years ago..." All the inhabitants of the apartment building the friend lives in seem to be acting strangely as well. Takeru investigates and a Gamma appears. Takeru transforms into Ghost and fights but Specter appears. Takeru, who now has lost all fear, confronts Specter as well.

Thanks to his father's soul, Takeru is still free to collect the 15 Ghost Eyecons once more, and by doing so, he can also bring his father back. But first, he encounters the soul of Sakamoto Ryōma, who poses a challenge for Takeru before he willingly joins him, which he describes as a "Satchō Alliance". Along the way, Takeru must deal with a new Gamma, as well as the return of the Katana Gamma.

Nagamasa, an artificial satellite developer, wanted to follow in the footsteps of his father Satsunoshin and his brother Yoshiyuki, both pioneers of the trade. He dreamt about working together with them to create an artificial satellite. Unfortunately, when they were about to build one, Yoshiyuki passed away in a freak accident causing Satsunoshin to retire out of grief. In order to fulfill Nagamasa’s dream, Takeru tries to convince Satsunoshin to continue building the satellite. However, after the Planet Gamma's attack, Takeru tries to make it his priority, but Onari persuades him to focus on helping Nagamasa resolve things with his father Sachinoshin first. The split between father and son has something to do with the past, and Takeru must figure out what that event was to resolve their differences before the Planet Gamma attacks, again. ​

Alain has turned Makoto into Necrom Specter and now has full control of him, calling him the "perfect friend". Takeru immediately denies this and promises to get Makoto back. Igor, using a Gamma's special powers, has infiltrated a company building. Meanwhile, numerous objects have become drawings in the city. It seems that a new Gamma has appeared. Takeru locates it, transforms into Ghost, and attacks but the Gamma does something nobody could expect... Kanon, wanting to save her brother, searches for Alain by herself.

Takeru tries to teach the Gazai Gamma the meaning of friendship, but must also deal with both Igor and Necrom Specter seeking to destroy the "incomplete" Gamma.

Takeru is now more resolute in bringing Makoto's body back from the Gamma world and Alain seems to have agreed to help. However, Akari is the one to stop them, stating that "It is not time yet." Akari senses that something is going through Alain's mind and is determined to find out more. Igor issues new orders to Bills and the Hikoki Gamma. Alain, irritated at the way Akari is seeing through him, goes to Fumi's takoyaki stall and Kanon is there. Suddenly, she falls unconscious. When Alain looks up, the sky is red.

Takeru and Alain have returned to the Gamma World. The former returns to save Makoto while the latter is set on finding answers. Takeru, under the impression that they both had the same objective in mind, loses sight of Alain. What are his true intentions? Meanwhile, Akari, Onari, and Kanon can’t do anything but wait. Akari continues trying to break the code of the Monolith while Onari teaches Cubi more about humans. Igor, on his side, continues with his plan. Adel has witnessed the birth of a new threat from the Praying Room...

After witnessing the murder of his father Adonis by his older brother Adel, Alain is unable to move and cannot overcome the situation and feelings it caused. Makoto has obtained a mysterious new Eyecon and goes in search of Takeru, who did not return after his encounter with the Gammaizers. In the human world, Cubi is in a slump. While trying to clear his head, he is confronted by the Onpu Gamma. Akari, Onari, and even Igor are added into the mix. Will Onari and Akari be able to overcome this pinch?

Alain had brought a drawing set for Fumi but her Takoyaki stand is full of people looking worried while an ambulance is seen rushing away. Alain cannot believe what he hears once he asks what happened, his hope fading away yet again... Yuki has infiltrated Deep Connect and it is none other than CEO Steve Bills who finds her, but offers her his help. Takeru and the others come aftewards and, while not fully trusting Bills, they follow him. Yuki finally reaches where her father is but a terrible truth awaits.