Onija, the fiery member of the Eugenicists, gets into a yelling match with Gauma, calling him a traitor and ready to kill him. The only problem, as the level-headed Juuga (a calm Kamiya Hiroshi) points out, is they have no kaiju with which to fight Dynazenon, so they’d better just split for now. But it’s clear there’s bad blood between them, and Gauma’s human co-pilots want to know what led to the rift.
In the meantime, Yomogi attempts to practice in his Dyna Soldier, and then he and Yume actually hang out during school. Specifically, they go to the chorus club advisor asking about her sister Kano, who she tells Yomogi died five years ago, just before the first recital she ever invited her to.
Yume and her sister didn’t speak much. Koyomi then runs into a classmate from middle school he once watched breaking school windows; now she’s married…and Yomogi’s boss, who gives him her contact info. Little by little, we’re being presented with bits and pieces of the Dyna-pilots’ pasts. Do their connections to each other predate their current collab?
Perhaps most mysterious is what is up with Gauma and the Eugenicists. Juuga takes the step of meeting with Yomogi after school—not to threaten, like his hotheaded comrade, but to answer what questions he can. Yomogi learns that Gauma was someone Juuga and the others looked up to 5,000 years ago, but at some point Gauma betrayed them and they all died.
Now they’ve revived…for some reason. As for how and why Gauma betrayed his kohais, he’s tight-lipped as the co-pilots visit him under the bridge, eating tiny river crabs. The next day, a new kaiju appears, and Onija uses the Vulcan Salute to activate it.
When the Dyna-pilots learn of the new kaiju sighting, they all answer the call, but remain frustrated with Gauma’s silence. When it’s clear they won’t be able to defeat Onija’s explosive-lobbing kaiju without combining, they insist he give them something so they can trust him enough to combine.
Gauma gives in, telling them he wants to meet someone, and believes he was given the power to operate Dynazenon so that he could find that person in this era. When he affirms that this “someone” is a woman, everyone understands, and are sufficiently satisfied that the combination can proceed.
The combined Dynazenon grabs the kaiju and launches it into space, where its explosion attacks won’t work in a vacuum (while proving that this world has significant differences from Akane’s “world” in Gridman). Dynazenon launches all its weapons, which apparently work just fine in space. The kaiju is blasted to pieces, one of which gets through the atmosphere and knocks Onija off his electrical pylon. But while it sure looked like he was killed, he’s actually fine.
“Kaiju defy common sense,” says Gauma. They make the impossible possible. All the pilots need to confirm this is the fact they’re floating in space. But to Yume, it means something more. If the person Gauma wants to meet revived, maybe her sister can be revived too?