The unprecedented disaster of falling stars hit the earth in the 20th century. Under this disaster, most cities in the world were destroyed. However, the unknown element found in the meteorite, the universal element, accelerated the development of human science and technology, and finally a new human with special powers called the "Star Vein Generation" was born. The stage of the world's largest comprehensive combat entertainment project "Star Wars Festival" is the aquatic school city "Rikka" surrounded by six academies and commonly known as the hexagram. Amagi Ayato, a special student who transferred to the high school of the Star Guide Hall Academy, vowed to fight in this city in order to realize his wish.