Yoon Hak Soo(Seon Woo Jae Deok) was killed by Jang Do Hyun(Lee Deok Hwa).
On the first episode of MBC TV weekend drama 'May Queen' that aired on the 18th, Jang Do Hyun was seen destroying the family of Yoon Hak Soo.
One day, Yoon Hak Soo received a phone call from Jang Do Hyun saying run away, and he ran away with his family. Yoon Hak Soo told Park Ki Chool (Kim Kyu Chul) and his family to run away first, and remained.
At that time, Jang Do Hyun appeared and calmed down Lee Keum Hee(Yang Mi Kyung) and went to Yoon Hak Soo. Jang Do Hyun removed the group. Jang Do Hyun pointed the gun at Yoon Hak Soo who was showing him thanks.
Yoon Hak Soo said, "Hyung, why are you doing this?" He was shocked and died. Park Ki Chool saw everything and told Jang Do Hyun to just let him live. Park Ki Chool kneeled and said, "Please let me live, just think of my young son Chang Hee. I didn't see anything. I will shut my mouth forever. Whatever you do, you will do it." Yoon Hak Soo couldn't even close his eyes due to the betrayal.
Jang Do Hyun made a proposal to him and said to send Seon Woo Jae Deok's son Hae Joo away. Hae Joo was then handed off to Chun Hong Chul(Ahn Nae Sang).
Lee Keum Hee was left alone and lost Yoon Hak Soo and Hae Joo. Jang Do Hyun asked, "Can you take care of these kids with me?" Lee Keum Hee replied, "Wouldn't it be shameful for their mother?" Jang Do Hyun replied, "More than that, the days thinking of you was harder. Lee Kum Hee was going to reject his proposal, but couldn't ignore the crying children.
