In "Mask" Yoo In Young interrupted the process of Yang Mi Kyung's liver transplant.
On the episode of SBS "Mask" broadcast on July 22nd, Mi Yeon (played by Yoo In Young)'s revenge was headed towards Ji Sook (played by Soo Ae) and went down a path that they could not return.
Mi Yeon learned about Suk Hoon's evil deeds. She blamed Ji Sook for making her house into a mess. At this, unlike himself that had lost Suk Hoon, Ji Sook was very happy with Min Woo. This made Mi Yeon upset. Her anger turned into a very scary rage and revenge.
Mi Yeon then learned that her mother was looking forward to a liver transplant. Her son Ji Hyuk (played by Hoya) had decided to give her a liver transplant. At this, they had a surgery date and afterwards, Ji Hyuk's body had an allergic reaction.
It turns out that Mi Yeon would find out Ji Hyuk had a peanut allergy. Afterwards, Mi Yeon secretly put medicine for Ji Hyuk to eat and Ji Hyuk could not receive a surgery. Mi Yeon's jealousy and resentment brought evil deeds and ended up being a great tragedy. In the end, Ji Sook's mom skipped the window of opportunity to get surgery. She ended up dying.
