“Someone has embezzled money from the Tenguji Aina Group…”

As Mikoto Tenguji (Mari Natsuki), the head of the Tenguji family, gathers with her relatives and her right-hand man, Executive Director Yamato Isezaki (Mitsuru Fukikoshi), private banker Koichi Anno (Toshiaki Karasawa) delivers a shocking revelation. While reviewing documents for a tax audit, Anno discovered that 100 million yen had vanished from Tenguji Art, a subsidiary of the Tenguji Aina Group.

Isezaki, who also serves as a board member of Tenguji Art, assures Mikoto that he will take responsibility for the investigation. However, when Anno offers to assist in the inquiry, Isezaki appears visibly shaken. Sensing something suspicious, Anno instructs his assistant, Osamu Mikoshima (Shuhei Uesugi), to investigate Isezaki.

Meanwhile, a false tip-off claiming that more than 1 billion yen has been embezzled from the Tenguji Group is posted on social media. Who is behind this deception? And what is their motive…?