A story of an affair between a woman who works in an office and a married delivery man. The woman has feelings for the delivery man who comes to the office every day. One day, the two of them suddenly become close in the office and try to have sex in the office... but they have to stop when they are about to be seen by someone. The woman is worried that she will be able to have sex in the office in the limited time she has, so she buys some crotchless underwear and has quicker sex in the office.