From the introduction:
In the year 1966, Earth is plagued by mysterious phenomenon, alien invaders, ancient evils, and all other forms of weirdness. To combat this threat Humanity relies on the “Science Special Search Party”, also called the Science Patrol or SSSP. This special worldwide police force is equipped with high-tech weapons and vehicles, as well as extensive scientific and engineering facilities. The Japanese branch, led by Captain “Cap” Toshio Muramatsu, have encountered a strange glowing orb. Shin Hayata, the Japanese SSSP branch’s most capable member, is sent out to investigate but crashes when he collides with a strange entity of light. This entity is revealed to be a member of the Space Garrison, a galactic-level military organization that seeks universal peace and justice, in search of a criminal who fled to Earth. The collision has left Shin Hayata nearly dead, and so the entity grants Shin his lifeforce. Now revitalized Shin has access to the Beta-Capsule, through which he can become the hero Ultraman!