30 milliion years ago, Tiga, the Giant of Light, protected the ultra-ancient people. After the ultra-acient
civilization died out, Tiga had transformed into a stone statue, but was resurrected when Tiga merged
with the pilot Daigo of the GUTS defense team, who possessed the genetics to turn into light.
The year is 2009, eight years after Ultraman Cosmos first visited the earth and met Musashi Haruno.
The monsters have been moved to a protected area, and are coexisting with humankind.