After a humiliating defeat, Isamu (the younger brother of Wataru Kazama) quits rugby and stumbles upon the Nebula House, a rent house, where its residents invited him as their newest housemate/co-tenant. Isamu soon learns that they are aliens in disguise, but decided not to further report at Xio, witnessing them not as a threat.
The peaceful monster Houlinga appears and becomes the Sakane village's centrepiece in tourism. One month later, the mayor requests Xio to cure the monster after it was found suffering from malnutrition but as they injected it with a cure, the monster rampages.
After 27 failed attempts to materialize Cyber Gomora, Daichi tries to find the error of his ways, eventually pushing himself too hard and almost endangering his health condition which made his comrades worried.
Another breed of Demaaga was awakened and attacked Umezawa city, the same spot its previous brethren went to. Ultraman X tried to attack the monster but a strange Dark Thunder Energy struck them as Demaaga transformed into Tsurugi Demaaga and pummels X into submission.
