Yuka is a housewife who once retired from being an investigator before marriage, but her skills were so highly valued that she continues to protect the safety of her community as a "Jeans Investigator." However, balancing her duties as an investigator and a housewife, she feels lonely as she and her husband grow apart. One night, she ends up having an affair with Mori, an old friend of her husband who had helped her get her drunken husband home. Around the same time, underwear thefts become frequent in the neighborhood. After accepting a request to investigate, the prime suspect who emerges in her investigation is none other than Mori...
