In the futuristic Ayanagi City, built to recover from a past disaster known as the 'Apathy Syndrome,' high school student Shin reunites with his elder brother Ryō, the city's police chief, after a decade. Mysterious events unfold, from a vanishing submarine crew to a haunting spiritless phenomenon resurfacing after ten years, and a gruesome inside-out corpse discovery. As Ryō delves into the enigmatic incidents, Shin, drawn into the chaos, unlocks his 'Persona,' unveiling a tangled web orchestrated by a clandestine organization.