A high school student named Matt Hudson joins the "Specialized Extracurricular Execution Squad" (SEES), a group of students investigating a temporal anomaly known as the "Dark Hour", during which its members can enter Tartarus, a tower containing monsters called Shadows. They battle the Shadows using a physical manifestation of their psyche called a Persona, which they summon by firing a gun-like object called an "Evoker" at their head.
