A new urban legend is circulating throughout Tokyo. It says that if you submit a request on the Ask-a-Thief Channel, the Phantom Thieves of Hearts will appear and deliver justice by snatching a corrupt person's heart and making them repent for all their wrongdoings. As odd and incomprehensible incidents continue to occur across town, more individuals make requests in the hope that the mystery vigilante organization would assist them. Kazuya Makigami is a nighttime burglar, but he is beginning to have second thoughts about his crimes and those who assist him in committing them. Kazuya, unable to stand up to his buddies, sends a request to the Ask-a-Thief Channel.