Will Lee Woojin get revenge on Oh Daesu for causing his sister's death?
Oh Daesu does not kill Lee Woojin. Lee Woojin gives Oh Daesu five days to find out why he was imprisoned.
Lee Woojin kills Joo Hwan.
Oh Daesu finds out Lee Woojin had imprisoned him because Oh Daesu had spread rumours about Lee Woojin's sister, causing her death.
Lee Woojin tells Oh Daesu he had slept with his own daughter just as Lee Woojin had slept with his own sister.
Oh Daesu begs Lee Woojin for forgiveness.