After marriage, Yuka's husband suddenly became cold toward her, leaving her deeply troubled. As she struggled with loneliness, memories of her kind former lover resurfaced, and secretly, her heart began to yearn for him again. Then, one day, fate brought them back together. A delivery man arrived at her door—and she couldn't believe her eyes. In an instant, he reignited her passion, and they quickly plunged into a torrid affair. Every day, sneaking behind her husband's back, they met secretly at her home, building an intensely passionate relationship. But soon, an unexpected turn of events would strike, pushing their affair toward a dramatic and life-changing crossroads.