They have conflicting philosophies in regards to defending Earth from a mysterious, malevolent and extremely intelligent cosmic entity.

Chrisis, a supercomputer developed the Alchemy Stars (a global network of young geniuses born during the 1980s), predicts around 1996–1997 that Earth and humanity would be annihilated by something known as the "Radical Destruction Bringer".

Technology developed by the Alchemy Stars is used to form an international defence organization known as Geocentric Universal Alliance against the Radical Destruction (G.U.A.R.D.).

During his battles, he encounters Ultraman Agul, whose human host is Hiroya Fujimiya, a former Alchemy Stars member.

Both clash because of their ideals regarding the protection of the Earth but eventually resolve their differences to battle their common enemy.

Factory announced to have struck a multi-year deal with Alliance Entertainment and Mill Creek, with the blessings of Tsuburaya and Indigo, that granted them the exclusive SVOD and AVOD digital rights to the Ultra series and films (1,100 TV episodes and 20 films) acquired by Mill Creek the previous year.