Inatani is thrust into a provocative game where he must use exclusive "sex vouchers" to track down legendary "titty champions" hidden throughout the city. Aided by a high-tech "booby scouter" created by his lustful professor, Inatani embarks on a series of erotic encounters with various women, including a shrine maiden and a socialite, all while navigating the competing desires of the girls in his daily life.
Naoya indulges in a series of erotic encounters with various women—including a professor, a promotional model, and his own step-sister—as he hunts for the legendary "champion bras." After a whirlwind of debauchery and a surprising "re-education" session, Naoya discovers that his wild conquests were a dream, only to awaken and find Nir in her true form to deliver his final reward.