The Detective Boys accompany Ayumi to Mitsue Mika's, her barber, apartment for a haircut. They discover that Mika died after being strangled by an unknown culprit. While the police investigate, Conan notices the blue plastic on Mika's neck and realizes she was strangled with a clothes hanger. Conan is certain Mika's boss, Futou Midori, is the murderer but lacks the evidence to prove it. The Detective Boys search for the hanger and find out that a crow has taken it to make a nest. The police then convict Midori for Mika's murder. Midori reveals that Mika was going to abandon her to pursue a higher career even though Midori was the one who trained her to be a barber. Later that day, the Detective Boys are attacked by crows who seek revenge for the stolen hanger.