On the weekend, a group of colleagues consisting of two men and two women planned to travel at a beach to help them both rest and relax after tired working days and make the relationship between them better. There are many things that even happened even changing the life of a pure girl. After swimming for a long time, the group decided to take each other into the nearby motel to rest and organize a small party meal. Although their party is only a little beer, it is enough to change the awareness of some girls, especially AOI. A little drunk in his body, the two boys invited the girls to play a game of stripping, if anyone lost, they would have to strip and suffer a proper penalty given by the winner, unfortunately Aoi was the loser and the form of punishment that she had to accept was sex with a cunning colleague.