38-year-old single mother, Ayame. Torn between loyalty to her late husband and the uncontrollable desires deep within, she lives in constant conflict. One night, when her son brings home a friend, she can't resist the temptation. She gives in to the young virgin, climaxing repeatedly under his thrusts, moaning and writhing in a lewd display she'd never show her son. One after another, she entangles herself with his friends, drowning in forbidden pleasure. This is the story of her fall into lust and contradiction—a single night of passion caught between desire and duty.