A housewife named Yui commutes by train to go to her part-time job. One day, she gives up her seat to an elderly man who looks like he has bad legs, but this is the beginning of a nightmare… The old man superimposes his deceased wife onto Yui and starts to harass her intensely. Mysterious presents arrive at Yui's home, and she feels a presence closing in behind her on the commuter train… As Yui trembles in fear, the old man's obscene fingers and tongue mercilessly invade her body!
