Matoi Sumeragi leads a relatively quiet life balancing school and a part-time job at her best friend Yuma Kusanagi's family shrine. However, her normalcy is disrupted when a Night, an evil entity from another dimension, attacks the shrine. Matoi successfully repels the attack by unintentionally invoking the powers of a god, which are natural enemies of the Nights. She soon finds herself at the center of a larger effort to protect people from similar threats, aided by experienced allies like Claris Tonitolus and Haruka Luciela.