Yomogi and Yume visit the city where they fought the Kaiju and witness the tragedy. He and the others start their Dynazenon maneuver training, but a Kaiju appears again without any delay.

One of the Kaiju Eugenicists, Juuga, tells Yomogi that they were betrayed by Gauma. Yomogi and the others become distrustful of Gauma but they end up having to fight a Kaiju with their hearts in disarray. With their hearts separated, Dynazenon is unable to unleash its full power.

Yume hears a rumor about Kano's death from an alumni of the chorus club which Kano was in while she was alive. Meanwhile, Koyomi awakens from a hangover and finds that he has lost Dynastriker. Gauma scolds Koyomi and he is reminded of someone he met the previous night.

Dynazenon is defeated by the Kaiju. A mysterious giant that appears. Despite the confusion, Onija and Mujina begin to fight the giant. Gauma has no way to repair the damaged Dynazenon.

Yomogi and the others combine into Dynazenon once more for the final battle.