The work that Marx Brothers will be competing in at the 1st AV Grand Prix is ​​an impossible fantasy setting, starring the popular G-cup busty idol Rio Hamasaki. The whole class conspires to rape the class president, who always has a cool, stern face. At first, the class president is reluctant, but she soon becomes addicted to the men’s big dicks and thick semen, and becomes so lovey-dovey that she volunteers to be a semen slave.