Before marriage, Yuka worked as a detective and, despite retiring, her exceptional skills led her to return as the Married Woman Jeans Detective, protecting her community while serving as a full-time housewife. However, balancing her duties as both detective and wife strained her relationship with her husband, leaving her feeling increasingly lonely. One night, after escorting her drunken husband home, she ran into his old friend Mori. A chance encounter quickly escalated, altering their relationship forever. Around the same time, a series of underwear thefts occurred in the neighborhood, prompting Yuka to take on the case. As her investigation deepens, the suspect she uncovers is none other than Mori himself.