The members of the Kibukawa Detective Agency take on the challenge of a series of mysterious deaths of a certain large company executive and a series of bank robberies.

Masao Ikurumi comes across the scene of a case where a famous company executive in Marihama City, K Prefecture, was poisoned, and together with Izuna Sagishima, he searches for the truth behind the case.

Meanwhile, Detective Kurogane is chasing a serial bank robber in T Prefecture. An investigation begins at the audition venue for the theater troupe Moonlight Brigade, which is about to perform...