In a quiet rural Japanese household, unemployed Kenta's mundane life ignites when his brother returns from a business trip with his stunning new Russian bride, Alisa, whose voluptuous figure and innocent charm immediately captivate him. Left alone together during the brother's extended absence, Kenta seizes the opportunity to seduce her through cunning "cultural lessons" and fabricated rituals, leading to a torrent of steamy, boundary-pushing encounters.