As the third episode of Shusaku unfolds, the academy handyman deepens his hold over the dormitory residents by piecing together fresh evidence of their private lapses. Several gifted musicians at Shukusei Music Academy struggle to maintain their polished images while facing the consequences of these revelations. Behind the facade of rigorous practice and elite standards, the young women are drawn into increasingly personal encounters that test their resolve and composure. The episode builds toward a pivotal moment where one resident's secret threatens to unravel the careful balance of discretion within the halls.