Dragonaut: The Resonance

Two years ago, Jin Kamishina survives a shuttle accident which killed the rest of his family. Now eighteen years of age, Jin lives a solitary existence, often avoiding questions about the rumors of the shuttle pilot (who was his dad) error. Meanwhile, Earth faces possible destruction from an asteroid, so the ISDA works on the "D-Project". In a facility, Kazuki Tachibana, Jin's old friend, is being tested for his compatibility with a dragon, which is a success. Elsewhere, Jin witnesses a strange creature kill a woman. The creature then goes after him too, and eventually catches up to him, causing Jin to fall out the window. However, Jin is caught by a mysterious girl who is able to fight off the monster. When Jin wakes up, the girl introduces herself as Toa.

Jin suddenly wakes up in an ISDA room, where he is questioned about the shuttle accident two years ago. He is also told the truth about the asteroid Thanatos, in which extraterrestrial life called Dragons came to Earth from Thanatos. Hearing that one of these dragons was the cause of the shuttle accident, he asks them to tell the truth to the public, so his father's name could be cleared. They deny his request and instead ask him to become a Dragonaut, which he rejects. He then meets Kazuki Tachibana, his old friend, who now works for the ISDA. Later, Jin remembers where Toa is to meet him, so he runs away from the ISDA to see her. The two are finally reunited, but it is cut short when the ISDA attempts to capture Toa. During their attempt, one of their own, Spirytus, transforms into a dragon and attacks Jin. In order to protect Jin, Toa reveals that she too can transform into a dragon.

Toa and Spirytus continue their battle as dragons, but once their battle reaches a critical point, the ISDA is given permission to interfere in the battle. Thus, Machina, Amadeus, and Howlingstar transform into dragons, controlled by their "pilots", Akira, Sieglinde, and Raina, respectively. Despite the odds, Toa manages to hold her own, which is when Gio, Kazuki's dragon, arrives on the scene, having previously been awakened by one of Toa's shock waves during the battle. As Gio, who is concerned about Toa, transforms into a dragon, Jin hops on his back so he can try to help Toa. As the two reaches Toa, Jin sees a vision where Toa tells him that she can no longer be with him now that he has seen her real form. Gio then shows up to tell Toa that he was created in order to protect her, and as the two were about to link hands, Howlingstar attacks them, returning them to battle. Then, Toa accidentally knocks Howlingstar onto Gio, plunging Gio and Jin into the ocean.

During an ISDA meeting, the subject of whether or not the D-Project should be made public is brought up. Meanwhile, after Jin wakes up on a beach with Gio, they discuss what Toa is to them. Jin then hears Toa singing, which he realizes is coming from the moon. Later, Machina and Akira come across Gio who is apprehending Jin, so they bring the two back to the ISDA. As Jin is being questioned by Akira, Gio explains his actions to Sakaki, the Dragonauts' military commander. When Gio is being escorted to Yuuri, he escapes, and Jin is also revealed to have escaped after being questioned. This is when Akira realizes that Jin and Gio planned their capture; in order to get a pod necessary for Jin to go into space with Gio. After Gio's brief scuffle with Machina, Akira's dragon, Gio transforms and Jin attaches the pod to Gio's neck. They then fly off towards the moon in hopes of finding Toa.

A flashback sequence shows how the military tried a Resonance program five years ago, but it ended in failure. Presently, during their ongoing search for Toa, Gio decides to abandon Jin believing that he was wrong about Toa being on the moon, not realizing that they have just missed her. Meanwhile, back on Earth, the ISDA publicly reveals the truth about the D-Project and Thanatos. The Dragonaut team is then ordered to focus on the D-Project, whilst the military handles the recapture of Gio. In the lunar city, Jin is captured by Garnet and the military. In order to lure Gio in, Garnet sends a public broadcast about Jin's capture, but in a frequency which only dragons can hear. Gio initially ignores the broadcast, but after accidentally seeing Toa in a video that some kids took, he goes to save him. During his attempt, Gio battles Garnet while being weakened by a machine, but as Jin tries to escape, he destroys the machine. Gio then saves Jin and transforms into a dragon.

During a flashback, it is revealed that Jin had been operated on after the shuttle accident, during which Yuuri, an ISDA researcher, claims to have noticed signs of a Resonance. In present time, Yuuri and Sakaki request for Kiril to reassign the Lindworm Unit to capturing the Album [Toa]. The mission is accepted so Raina, Akira, and Sieglinde travel to the Moon, where Jin and Gio continue their search for Toa. As Yuuri arrives home, she unexpectedly encounters Kō, who shows her incriminating evidence regarding Amagi. Back at the moon, in a coffee shop where Toa had been staying, she is encouraged by the owner to not deny her feelings, so she decides to go look for Jin. When she finally finds Jin and Gio, Howlingstar, Amadeus, and Machina arrive in order to capture her. Gio interferes and fights Howlingstar, and as Amadeus takes Jin to Sieglinde, Machina engages Toa, but instead of fighting, she asks Toa why they were born, to which Toa replied that it is all due to destiny.