Before her marriage, Maki was an investigator, and even though she retired once, her skills were so highly valued that even now, as a full-time housewife, she continues to protect the safety of the local area as a special secret investigator. One day, Umeda, Maki's childhood friend, happens to move into the house next door. After meeting for the first time in a long time, they start to interact, and before they know it, the two of them become involved. At the same time, there have been frequent burglaries in the neighborhood. As she accepts the request and begins her investigation, the culprit that emerges on the radar is Umeda, with whom she has fallen in love...