Sawaguchi ga kenkyū shite ita ryōshi jigen tensō shisutemu wa seikō shitaga, gūzen jijiren ga kenkyūshitsu ni tensō sa rete shimatta. Hiura taichō wa sawaguchi kara nagaiai otosata ga nai koto o shiri, Musashi ni menkai o irai shita. Sono kekka, Musashi wa jijiren ni shūgeki sa reru. Hiura taichō to shinobu mo yattekita. 3-Ri ga ie ni hairu to sawaguchi no sugata ga attaga, Hiura wa kanojo no te no yubiwa ga izen to wa chigau koto ni kidzuita. Jijiren wa aratana shinryaku keikaku o netta. Urutoramankosumosu ga zettaizetsumei no kiki ni ochītta toki, kyōryokuna suketto bagon ga arawareta.
The quantum dimension transfer system that Sawaguchi was researching was successful, but the Jijiren was accidentally transferred to the laboratory. Captain Hiura found that there had been no news from Sawaguchi for a long time, so he asked Musashi to visit him. As a result, Musashi was attacked by the Jijiren. Captain Hiura and Shinobu also came. After the three of them entered the house, they saw Sawaguchi, but Hiura found that the ring on her hand was not the same as before. The Jijiren formulated a new invasion plan. When Ultraman Cosmos was in a desperate crisis, the powerful helper Bagon appeared.
