
When Hikaru introduces himself and his Ultraman identity, Arina panickedly recalled her past: long ago, her planet Zandt was destroyed by Ultraman Ginga until Etelgar and his Space Time Castle rescued her.

While Arisa, Gōki and Mana fought the female warrior, Show threw his necklace, which disoriented Arina for her to regain back her senses. After Etelgar healed Arina from her headache, she intruded the Live Base and set her sight on the hosts of Ultraman Ginga and Victory. Captain Jinno complied to his help and assured that the whole UPG are willing to help him. During that time, her Victorium necklace release a wave which emitted a huge pain to Arina before she was picked up by Etelgar.īack at the Live Base, Musashi introduced himself as the host of Ultraman Cosmos and told them of Etelgar's mission to seal Ultra Warriors. Etelgar however resisted all their attacks easily without a flinch and had them on the ropes but before they could be captured by Arina, the two quickly cancelled their transformations and Sakuya provided them a cover. Victory appeared and battled Etelgar before Hikaru decided to help him and transformed into Ultraman Ginga. Arina soon revealed the Ultra Warriors in her captive before Musashi steps in and joined the UPG while Etelgar approached as well. Arina approaches the UPG members and orders for Ultraman Ginga to appear but the team instead attacked her. This eventually leads its members to a giant castle which position itself in a nearby city.

The party was soon interrupted with an alarm. After giving UPG members their gifts, he was presented with their newest member Sakuya, who was scouted by Captain Jinno as a liaison to the Victorian and humanity and Mana, who was destroyed during Vict Lugiel's attack but later rebuilt by Tomoya through imprints and memories left from her Victorium necklace.

Meanwhile, UPG members celebrated the return of Hikaru Raidō from a year-long wandering around the world. While travelling in the Space Time Castle, Arina and Etelgar set their sight on Ultraman Ginga, the Ultra Warrior of the future. Cosmos quickly releases Musashi from him but to their horror, other Ultra Warriors falls victim as well such as Tiga, Dyna, Gaia, Nexus, Max and Mebius. Ultraman Zero, having pursue Etelgar in various dimensions, met and attacked the fiend once again but the latter retreated, saying that Zero is rather a "main dish". Summoning his accomplice Arina on his palm, she imprisons Cosmos in their Space Time Castle. At Planet Juran, a golden being known as Etelgar fought Ultraman Cosmos and easily defeated him.
