Odd Detective 15

The film centers around the mysterious death of Shinsuke Maeda, a wealthy older man found dead in his garden. Initial assumptions about his accident are undermined when it is discovered that a safe in his living room has been emptied. This revelation sets off a chain of suspicions involving his daughter, Yumie Nagano, and a woman named Chikako Inui, who was romantically linked to Maeda.

As the investigation unfolds, Yumie accuses Chikako of being the perpetrator, citing her father's intentions to marry Chikako. However, Chikako counters with her own suspicions about Yumie and her husband, who were struggling financially and had previously pressured Maeda for money. The narrative intricately weaves the characters' motives, leading to a tense exploration of trust and betrayal while maintaining a mystery that keeps viewers engaged.