You get 12 episodes of pure forward momentum without pretense. The action sequences deliver actual impact on a TV budget, and the pacing never stops to explain what should be obvious. It's built for viewers who want their anime to move, not think, and it executes that one job cleanly enough that you don't notice the monster-of-the-week repetition until it's already over.

A century of warfare in the legendary realm of Tetra Heaven ends, and the defeated gods look for a new home in Septpia, the human world, arriving as invaders. ALCA, a special police agency charged with guarding cities from these foreign attackers, relies on Logicalists, people who can enter a Trance with goddesses from the other world to hold their own in battle. Yoshichika Tsurugi once fought as a Logicalist, but he lost his Logic card and now lives an ordinary civilian life with his father and younger sister. When he is caught in an attack on a shopping mall, he meets a goddess named Athena, who is holding his lost card. Able to fight again, he forms a contract with her, joins ALCA and teams up with other Logicalists against the threats from Tetra Heaven.