The appearance of a kaiju followed by the entry of the gigantic robot, Dynazenon, leads Gauma to reveal his secret of being a "kaiju user."
Gauma tells Yomogi, Yume, and Koyomi that Dynazenon chose them because of their aptitude, and they must begin training as the terrorist kaiju users will attack again.
The Kaiju Eugenicists ask Gauma to join them; Chise feels jealous; Yomogi, Yume, and Koyomi confront Gauma about his past.
Inamoto thinks Yomogi has a crush; Sizumu, a Kaiju Eugenicist, joins Yomogi and Yume by pretending to be a student and tells them about the kaiju.
Yomogi and Koyomi try combining Dyna Soldier and Dyna Striker; Gauma tries to capture Sizumu while everyone is at the beach; Sizumu is summoned by the other Kaiju Eugenicists.
Rumors about Kano disturb Yume; Sizumu disagrees with the other Eugenicists about what to do with Gauma and the others.
Daiki Hamano
Gauma
Junya Enoki
Yomogi Asanaka
Shion Wakayama
Yume Minami
Yuichiro Umehara
Koyomi Yamanaka
Chika Anzai
Chise Asukagawa