Humanity is confronted with an unanticipated calamity in the year L.C. 922. A 100-year war in the fabled country of Tetra Heaven has come to a conclusion. After losing the battle, the gods were searching for a new home and discovered Septpia's human planet to be it. They then launched an attack on Septpia. The Logicalists, members of the elite ALCA police force committed to securing the cities, then exert every effort to protect humanity. A logician's chance in the battlefield depends on their ability to enter a trance with goddesses from another realm.
Before he was involved in an attack, Yoshichika Tsurugi, a civilian who lacked "logic," led a happy life with his family. Athena, a stunning goddess whom he encounters, possesses the "logic" Yoshichika lacked. The two are now traveling together in the direction of their destination.
