Young Kengo Manaka lives on Mars. As he lives out his peaceful, day-to-day life, the monster Golba suddenly appears, throwing the town into chaos! Meanwhile, Kengo has a fateful meeting with a giant stone statue sleeping deep beneath the ground on Mars. When Kengo becomes one with an Ultra-Ancient light, his destiny is forcefully thrown into motion!

A man named Ignis, who calls himself the No.1 treasure hunter in the universe, is going after Yuna! What on Earth could he possibly want with her!? At the same time, Gazort appears cloaked in dark clouds and engages GUTS-Select in a fierce battle! If this continues, they'll all be taken out in one fell swoop! Kengo!