After arguing with her boyfriend and running out of her apartment, Yuu finds herself trapped inside the elevator with a salaryman who lives in the same apartment building. The emergency phone doesn't work, and her smartphone is out of range, so she can't call for help, and they end up waiting alone for help. Time passes, but the elevator doesn't respond at all, and the two of them get anxious, so they lean closer to each other and touch each other. The two, who hadn't even had a proper conversation until just now, are pressed together in the narrow elevator, covered in sweat and seeking each other.