Prior to his membership in Galaxy Rescue Force, Ribut was a civilization guardian alongside Ultraman Max. As the two were caught in a trap set by a revenge-seeking villain, 80 and Yullian were attacked by Leugocyte in Planet Kanon.
A group of ultras receive help fighting Leugocyte, while Ribut's team fight to free Max from Gudis Cells. Absolute Tartarus reveals himself to the warriors of light.