Sakuya Shiomi is an orphaned teenager who transfers to Gekkoukan High School, on Tatsumi Port Island and finds himself experiencing a supernatural phenomenon known as the Dark Hour. After witnessing his new Iwatodai dorm-mates being attacked by mysterious creatures known as Shadows, Sakuya goes to their aid and awakens to the power of his Persona. He later joins a covert extra-curricular club at Gekkoukan High called SEES, whose members have but one goal: to rid the world of the Shadows.