Anri receives a letter. It contained a concert ticket for a band led by Hoichi Tsukushi, someone that Anri had gotten to know through music.

That's when the robot kaiju Garamon appears from a meteorite that came from outer space.

Anri realizes that Garamon's behavior is controlled by a mysterious sound wave, and she has a hunch...

Gento's son, Jun, wants to go see a newly discovered egg shown on television, so the Hiruma family decide to go on a day trip to visit it. There, they witness the birth of Baby Demaaga. In the midst of the capture operation led by the GGF, the mother Demaaga makes an appearance. The GGF launches attacks as the parent kaiju approaches its baby. While evacuating, Gento can't help but feel mixed emotions seeing Demaaga trying to protect its child. Suddenly, the Blazar Brace appears on Gento's left arm.