Maya (Mauka Osaki), who is popular as a mysterious singer, suddenly stops her activities!Sensing something hidden, Kuriyama (Kenta Kiritani) begins to investigate.During the repeated squatting, Kuriyama became suspicious of Kazuyo Amamiya (Chisei Nakai), a cleaner who went in and out of the music studio where Maya often went.

In order to eliminate doubts, Kuriyama pretended to be a cleaner and sneaked into the studio.There, he witnessed high-energy scenes...

The singer who inspired many people with her singing has such a secret!