Wrong Number.A woman married to Masuda, an elite salaryman, complains about him never being at home to spend time with her and his son, Hirofumi. The phone rings and when she answers it, a woman she hadn't heard before says she'll not be there for a while. Confused, Mrs. Masuda asks who she is trying to contact, but the woman hangs up. Later in the day, Hirofumi falls asleep while playing, and the phone rings again. Mrs. Masuda picks up the phone and the woman on the other side asks if she could watch her child for another hour. Mrs. Masuda tells her she has the wrong number, but the woman on the other line hangs up immediately. Frustrated, she slams the phone down on the receiver, only for it to ring immediately. It's her husband this time. He tells her he'll be late and suggests to eat dinner with Hirofumi. At dinner, Mrs. Masuda tells Hirofumi not to make a mess, making him cry. The phone rings and the same woman from before tells her she's finally able to leave. Frustrated, Mrs. Masuda tells her she has the wrong number again. But then the woman says something that scares her, "But Hirofumi is crying, is he?" and hangs up. Mrs. Masuda suddenly recalls Hirofumi drawing a picture of a woman with the word, "Mom" written on it. Mrs. Masuda suddenly thinks that it must have been THAT woman back then... Suddenly, the doorbell rings and a shuffling noise can be heard on the other side. The woman's voice says she's there to pick up Hirofumi. The door opens and a woman with pale skin, black hair and dark eyes enters the room. Mrs. Masuda grabs a knife just as Hirofumi calls out, "Mama?"