When our eldest daughter started kindergarten, my wife began working part-time at a factory in the city. Until then, she had been a full-time homemaker raising our children. Seeing my wife so lively and energetic now, as her husband, I felt relieved financially and thought it was a good thing, watching over her with a smile. However, it seems that recently, my wife has been entertaining a student part-timer from her workplace at our home, drinking tea and chatting... I wasn't too keen on the idea, so I decided to install cameras in our house...