While she loves her boyfriend, Nana, a college girl, is frustrated that he doesn't engage in foreplay. Her diary, detailing her sexual encounters with him, falls into the hands of a perverted professor who has an unusual obsession with licking and savoring words. Upon discovering Nana's sexual history, the professor devises a plan to seduce her body during a seminar retreat, even while her boyfriend is watching remotely. Nana, overwhelmed by the professor's relentless tongue and humiliated by his relentless pussy play, becomes addicted to his cunnilingus and ends up as his creampie sex slave.
