If you have two or more extreme missions naked in the open-air bath to two friends who are less than a friend in a group of men and women who come to the hot spring trip in the circle of the university student and do the sex up to sex?

After a friend who finds in the hot spring field, the college student's men and women less than a lover is caught, and the prize prize mission is challenged. A mission that becomes radical every time the amount gradually increases! Do they have sex during the mission? Sexual desire and money greed in each other with her boyfriend! AV that comes to human nature from desire!