A man lost in his daily routine, who repeats the same steps every day of the week, sees the same people, sits in the same seat on the metro, has his habits disrupted when he finds himself sitting face-to-face with a beautiful woman who captures his attention and desire. After the metro passes through the tunnel and the lights go out, she mysteriously vanishes. Enamored and disillusioned, he contemplates urban solitude, experiencing recurring visions of the same woman, which lead him to question his sanity.