Due to company policy, we decided to accept an intern named Yuki, but I, the person in charge of education, was irritated by his inability to do his job because of his secretive nature. Moreover, he messes with his wife Airi. Meanwhile, he notices that Airi's behavior is changing day by day. I have a bad feeling that my wife might be having an affair with Yuki... And today, after installing a surveillance camera, he calls Yuki home, says he has something to do, and decides to leave.