Azusa finds herself married into a household dominated by three widowed brothers, each with a distinct and unusual personality: an S man, an M man, and an extremely lustful man. Initially overwhelmed, Azusa soon embraces the situation, giving in to her own insatiable desire for sex. Neglecting her husband, she indulges freely with the brothers, who are captivated by her bold and seductive nature. As the perverted siblings fall under her spell, they become deeply entwined in passionate and uninhibited encounters with her.