A fresh urban myth is spreading through Tokyo. It says that if you post a plea in the Ask‑a‑Thief Channel, the Phantom Thieves of Hearts will arrive and enforce justice by snatching a corrupt individual's heart, forcing them to repent for all their misdeeds. As bizarre and inexplicable incidents keep unfolding across the city, more residents file appeals hoping that this enigmatic vigilante squad will intervene.
Kazuya Makigami, a nighttime thief, is beginning to question his deeds and the allies who assist him. His conscience grows heavier with each heist, prompting him to seek redemption. Unable to confront his cohort alone, Kazuya sends a request to the Ask‑a‑Thief Channel.