A molestation unfolds in front of a married couple on a train. The husband doesn't notice, and the wife can't take her eyes off him. Eventually, the wife is not satisfied with just watching, so she approaches the molester and starts rubbing her thighs and buttocks against him. The molester also sees her as a perfect prey, groping her breasts and playing with her crotch. In a situation where the husband, let alone the people around them, might notice, the actions of the turned-on wife and the molester escalate, and they even have sex on the train...