When high-school freshman Yomogi Asanaka stumbles across kaiju user Gauma, he and a few unsuspecting onlookers get caught up in a fight against kaiju.

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.

At Chise's suggestion, Yomogi and his friends go to a large outdoor pool, but there is unexpected company there. Gauma orders Yomogi and Yumemi to pretend to be lovers for a certain mission.