Set five years after the Monster Zero incident of 2019, Monarch would create a special task force specializing in researching the Titans, extraterrestrial life, and other scientific mysteries. This organization is called the Science Special Search-Party (SSSP).
Shin Hayata, a Japanese-American Air Force pilot would be testing a new prototype jet while two mysterious large capsules would chase each other through space. The blue capsule lands in the lake, while the red one collides with Hayata's jet, killing the pilot. It is revealed that the red capsule was actually a spacecraft piloted by an alien peacekeeper called Nii-San.
Nii-San would feel immense guilt, blaming his recklessness on killing this man who had nothing to do with what he was after. He would merge his life with Shin's. While doing so, he explains he was chasing after a rogue monster called Bemular, and gifts Shin the Beta Capsule which he can use to transform into Nii-San. As Bemular terrorizes the people next to the lake, Shin transforms into the alien who saved him and fights the monster and kills it. The people would witness this, and worship him as a savior, calling him "The Ultraman".
Meanwhile, Baltan, a fugitive who is currently running away from Ultraman lands on Earth. He devises a plot to take over the world using mind-control, as well as shape-shifting to become government officials to manipulate conflicting countries to kill each other with nuclear weapons.
