In the near future, the population has been drastically reduced due to a series of catastrophes around the world. In Japan, a mysterious, high-technological machine called EXE was unearthed from a layer of rock that had risen due to the disaster. Its management and research was being conducted by the Japanese government's secret agency, the Special Mission Organization Libra. However, countries around the world send their agents to Japan one after another in an attempt to seize EXE. To counter this, Libra developed an enhanced suit that utilizes EXE. Commonly known as "Cutburst," it is given to Libra's new recruit, Douji, who takes on powerful foes! But there were others with EXE suits besides Douji and his friends...! A man who calls himself the Arbiter, head of the private organization Judge. Is he friend or foe?[2]