Through a twist of fate, two college graduates transmigrated through time and space to a world with Ultra Warriors. During the journey, they unexpectedly lost contact with their girlfriends. It was the year after Ultraman Mebius and Ultraman Hikari defeated Alien Empera, the Dark Emperor. One of the students joined the defense force, GUYS JAPAN, and gained the power of an Ultra Warrior. The other student gained that power by mistake and thought he was invincible. At that time, the Demon Clan launched an invasion of planets across the universe, Earth included, in a bid to rule the cosmos. In the end, the two Ultra Warriors joined forces and defeated them. But monsters continued to appear, one after another. What was going on? What was the reason behind the endless monster attacks? Who was pulling the strings behind it all?
