After a haunting nightmare about her mother's death, Ran starts recalling a past event involving her parents. Meanwhile, a series of attacks target individuals linked to Mouri, each identified by a playing card number. As Conan connects the dots, suspecting a vengeful card dealer recently released from prison, the situation escalates from injuries to murders. Racing against time to prevent the next tragedy, Conan unravels a surprising truth that unveils a different narrative, shedding light on the events from a decade ago.