After failing to find a job, the protagonist is forced to return to his parents' home. Compared to his brother-in-law, who feels awkward and out of place, only his sister-in-law, Miho, treats him with kindness. On a sweltering summer night, catching a glimpse of his younger brother and wife together in their room, the brother-in-law can no longer restrain himself and ends up forcing himself on Miho. Overcome with guilt over his actions, he resolves to leave the house, blaming himself entirely—yet Miho's unexpected reaction stops him in his tracks. As their sweat-drenched bodies entwine, a passionate and intense relationship begins to unfold. Within this tightly bound family web, love and hatred intertwine, leading to a climactic finale you won't want to miss!