A peaceful newlywed life at my wife's parents' house. But those happy days were shattered in an instant when her older sister returned home. Under the same roof as my beloved wife and mother-in-law, my sister-in-law's fierce seduction knew no bounds! From direct attacks to flaunting her sex with another man right in front of me! In the bathroom, and in the bedroom while my wife slept right beside me, I felt my sanity crumbling... And after crossing that line, I became a pathetic prisoner of my sister-in-law, both in body and soul.