While Nozomi maintains a happy marriage, she invites a handsome young man over to her house to have an affair while her husband is away. However, the exciting adventure only lasts until her husband returns home, and there is never enough time for Nozomi to be satisfied. One day, her husband goes on a business trip for three days. Seizing this rare opportunity, Nozomi immediately calls the man over. As if to release her daily frustrations, she takes this opportunity to have sex as much as she can and indulge in her desires to the fullest, and 72 hours of lust begin!