What do you do when water from every imaginable source begins to smell rancid? The Something Search People start looking for answers, while Gai wrestles with the cause.

Naomi asks Gai to accompany her to meet her mother, but their meeting is ruined when Juggler is revealed to be alive and explains his new plan, now that he possesses all the King Demon Beasts' Kaiju Card and the Ultraman Belial's Ultra Fusion Card.

The SSP help out a group of workers who are working on springs that are used to build the VTL's machinery, when suddenly an enormous robotic dragon appears from a portal in the sky. The SSP name it Galactron. It awakens and brings mass destruction, claiming that its purpose is for justice for the Earth.

Gai is unable to stop Galactron and save Naomi. In order to finally stop Galactron's rampage, he makes the decision to use Thunder Breastar again, but at what cost?