Oomura, Kogoro's friend, has been hearing strange sounds at his apartment and asks Kogoro, Ran and Conan to come by to help investigate. Kogoro spends most of the evening drinking with Oomura instead of investigating. Suddenly, one of the apartment windows breaks and out in the dark street below they see a man lying dead from a blow to the head. He was a student from Beika University and had been at a nearby apartment drinking with other students earlier that evening. Could one of these students have committed the murder?