Mary, a busty, frustrated married woman, sets her sights on the new neighbor—a ronin student who just moved in next door. Every day, she teases the young man with erotic lingerie, accentuating her cleavage and using her large breasts as weapons of seduction. Each time her ample cleavage spills out, she coyly whispers, "I was made too big..." while delivering him sexual favors. Hailing from the countryside and naive by nature, the college student quickly becomes aroused, completely captivated by Mary's charm as she draws him into a world of intense, pleasure-filled sex.