CSI: Crime Scene Talks

A man's corpse was found abandoned in a large trash can installed in the back alley. From the passport he possessed, the identity of the body was identified as Tomoki Hiranaka (Shunsuke Tanaka), who had stayed in Singapore for a long time. He was in Japan a week ago, and he seemed to have returned to Japan for the first time in three years. Satoshi Itomura (Takaya Kamikawa) finds a long piece of plastic with a small hole at the tip in the breast pocket of his jacket.
Soon, it turns out that Hiranaka is the founder of a venture company that operates the popular flea market app 'Nubol'. However, it turns out that Hiranaka was kicked out of the company ten years ago by the current president, Shun Wakao (Hideo Ishiguro). At the same time, Nouboru is in a situation where users are leaving at an accelerated pace due to the personal information leak problem. Did Hiranaka come back to Japan to take Nuboru back from Wakao?
Meanwhile, Itomura and the others find out that on the night Hiranaka returned to Japan, he met with Wakao's wife, Emika (Arisa Komiya). The banished founder and the current president's wife--what is the relationship between the two...!?