The episode follows the investigation into the death of , a female drummer found strangled in a rehearsal studio.
The case triggers a flashback for Masumi Sera. She remembers seeing her brother, Shuichi Akai , at a train station four years prior with a mysterious friend who taught her a few notes on the bass guitar. Detective Conan Episode 837
The murderer is revealed to be Rumi , one of the band members. The episode follows the investigation into the death